World Snake day takes place annually on 16 July. The purpose of World Snake Day is to educate people about the habits and behaviour of thes fascinating, diverse reptiles which can range in size from several inches to 30 feet long, and from friendly and docile to aggressive and deadly.
Snakes are elongated, legless, carnivorous reptiles of the suborder Serpentes. Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more joints than their lizard ancestors, enabling them to swallow prey much larger than their heads with their highly mobile jaws. To accommodate their narrow bodies, snakes’ paired organs (such as kidneys) appear one in front of the other instead of side by side, and most have only one functional lung. Some species retain a pelvic girdle with a pair of vestigial claws on either side of the cloaca. Lizards have evolved elongate bodies without limbs or with greatly reduced limbs about twenty-five times independently via convergent evolution, leading to many lineages of legless lizards. Legless lizards resemble snakes, but several common groups of legless lizards have eyelids and external ears, which snakes lack, although this rule is not universal (see Amphisbaenia, Dibamidae, and Pygopodidae).
Living snakes are found on every continent except Antarctica, and on most smaller land masses; exceptions include some large islands, such as Ireland, Iceland, Greenland, the Hawaiian archipelago, and the islands of New Zealand, and many small islands of the Atlantic and central Pacific oceans. Additionally, sea snakes are widespread throughout the Indian and Pacific Oceans. More than 20 families are currently recognized, comprising about 520 genera and about 3,600 species. They range in size from the tiny, 10.4 cm (4.1 in)-long Barbados thread snake to the reticulated python of 6.95 meters (22.8 ft) in length. The fossil species Titanoboa cerrejonensis was 12.8 meters (42 ft) long. Snakes are thought to have evolved from either burrowing or aquatic lizards, perhaps during the Jurassic period, with the earliest known fossils dating to between 143 and 167 Ma ago. The diversity of modern snakes appeared during the Paleocene epoch (c 66 to 56 Ma ago, after the Cretaceous–Paleogene extinction event). The oldest preserved descriptions of snakes can be found in the Brooklyn Papyrus.
Most species of snake such as the Boa Constrictor are nonvenomous and they either swallow prey alive or kill by constriction. Snakes that do have venom use it primarily to kill and subdue prey rather than for self-defense. However Caution should be taken as Some possess venom potent enough to cause painful injury or death to humans such as the Rattlesnake, Cobra, Fer-de-lance, black mamba and Boomslang.
More International and National Events happening on 15 July
The late great pioneering French naval oficer, explorer conservationist, filmmaker, innovator, scientist, photographer, author and researcher Jacques-Yves Cousteau sadly passed away 25 June 1997 in Paris, aged 87, following a heart attack. He was born 11 June 1910. He studied the sea and aquatic life And co-developed the Aqua-Lung. He was also a member of the Académie Français and studied at the Collège Stanislas in Paris. In 1930, he entered the École Navale and graduated as a gunnery officer. After a car accident cut short his career in naval aviation, Cousteau indulged his interest in the sea.In Toulon, where he was serving on the Condorcet, Cousteau carried out his first underwater experiments, thanks to his friend Philippe Tailliez who in 1936 lent him some Fernez underwater goggles. Cousteau also worked for the information service of the French Navy, and was sent on missions to Shanghai and Japan (1935–1938) and in the USSR in 1939.
After the armistice of 1940, his family took refuge in Megève, where he became a friend of the Ichac family who also lived there. Jacques-Yves Cousteau and Marcel Ichac shared the same desire to reveal to the general public unknown and inaccessible places — for Cousteau the underwater world and for Ichac the high mountains. The to neighbors took the first ex-aequo prize of the Congress of Documentary Film in 1943, for the first French underwater film: Par dix-huit mètres de fond (18 meters deep), made without breathing apparatus the previous year in the Embiez islands with Philippe Tailliez and Frédéric Dumas, using a depth-pressure-proof camera case developed by mechanical engineer Léon Vèche (engineer of Arts and Métiers and the Naval College). In 1943, they made the film Épaves (Shipwrecks), in which they used two of the very first Aqua-Lung prototypes. These prototypes were made in Boulogne-Billancourt by the Air Liquide company, following instructions from Cousteau and Émile. Having kept bonds with the English speakers (he spent part of his childhood in the United States and usually spoke English) and with French soldiers in North Africa ( Jacques-Yves Cousteau , helped the French Navy to join again with the Allies and assembled a commando operation against the Italian espionage services in France, for which he received several military decorations for his deeds. At that time, he kept his distance from his brother Pierre-Antoine Cousteau, a “pen anti-semite” who wrote the collaborationist newspaper Je suis partout (I am everywhere) and who received the death sentence in 1946. However, this was later commuted to a life sentence, and Pierre-Antoine was released in 1954.
During the 1940s, Cousteau worked on the aqua-lung design the forerunner of open-circuit scuba technology used today. Cousteau started diving with Fernez goggles in 1936, and in 1939 used the self-contained underwater breathing apparatus invented in 1926 by Commander Yves le Prieur but dissatisfied with its performance so he improved it to extend underwater duration by adding a demand regulator, invented in 1942 by Émile Gagnan. In 1943 Cousteau tried out the first prototype aqua-lung which made extended underwater exploration possible. In 1946, Cousteau and Tailliez showed the film “Épaves”and set up the Groupement de Recherches Sous-marines (GRS) (Underwater Research Group) of the French Navy in Toulon. A little later it became the GERS (Groupe d’Études et de Recherches Sous-Marines, = Underwater Studies and Research Group), then the COMISMER (“COMmandement des Interventions Sous la MER”, = “Undersea Interventions Command”), and finally more recently the CEPHISMER. In 1947, Chief Petty Officer Maurice Fargues became the first diver to die using an aqualung while attempting a new depth record with the GERS near Toulon.
In 1948, between missions of mine clearance, underwater exploration and technological and physiological tests, Cousteau undertook a first campaign in the Mediterranean on board the sloop Élie Monnier, with Philippe Tailliez, Frédéric Dumas, Jean Alinat and the scenario writer Marcel Ichac. The small team also undertook the exploration of the Roman wreck of Mahdia (Tunisia). It was the first underwater archaeology operation using autonomous diving, opening the way for scientific underwater archaeology. Cousteau and Marcel Ichac brought back from there the Carnets diving film (presented and preceded with the Cannes Film Festival 1951).Cousteau and the Élie Monnier then took part in the rescue of Professor Jacques Piccard’s bathyscaphe, the FNRS-2, during the 1949 expedition to Dakar. Thanks to this rescue, the French Navy was able to reuse the sphere of the bathyscaphe to construct the FNRS-3.The adventures of this period are told in the two books The Silent World (1953, by Cousteau and Dumas) and Plongées sans câble(1954, by Philippe Tailliez)
.In 1949, Cousteau left the French Navy.In 1950, he founded the French Oceanographic Campaigns (FOC), and leased a ship called Calypso from Thomas Loel Guinness for a symbolic one franc a year. Cousteau refitted the Calypso as a mobile laboratory for field research and as his principal vessel for diving and filming. He also carried out underwater archaeological excavations in the Mediterranean, in particular at Grand-Congloué (1952).With the publication of his first book in 1953, The Silent World, he correctly predicted the existence of the echolocation abilities ofporpoises. He reported that his research vessel, the Élie Monier, was heading to the Straits of Gibraltar and noticed a group of porpoises following them. Cousteau changed course a few degrees off the optimal course to the center of the strait, and the porpoises followed for a few minutes, then diverged toward mid-channel again. It was evident that they knew where the optimal course lay, even if the humans did not. Cousteau concluded that the cetaceans had something like sonar, which was a relatively new feature on submarines.
Cousteau won the Palme d’Or at the Cannes Film Festival in 1956 for The Silent World co-produced with Louis Malle. With the assistance of Jean Mollard, he made a “diving saucer” SP-350, an experimental underwater vehicle which could reach a depth of 350 meters. The successful experiment was quickly repeated in 1965 with two vehicles which reached 500 meters.In 1957, he was elected as director of the Oceanographical Museum of Monaco. He directed Précontinent, about the experiments of diving in saturation (long-duration immersion, houses under the sea), and was admitted to the United States National Academy of Sciences.He was involved in the creation of Confédération Mondiale des Activités Subaquatiques and served as its inaugural president from 1959 to 1973. In October 1960, a large amount of radioactive waste was going to be discarded in the Mediterranean Sea by the Commissariat à l’énergie atomique (CEA). The CEA argued that the dumps were experimental in nature, and that French oceanographers such asVsevelod Romanovsky had recommended it. Romanovsky and other French scientists, including Louis Fage and Jacques Cousteau, repudiated the claim, saying that Romanovsky had in mind a much smaller amount. The CEA claimed that there was little circulation (and hence little need for concern) at the dump site between Nice and Corsica, but French public opinion sided with the oceanographers rather than with the CEA atomic energy scientists. The CEA chief, Francis Perrin, decided to postpone the dump. Cousteau organized a publicity campaign which in less than two weeks gained wide popular support. The train carrying the waste was stopped by women and children sitting on the railway tracks, and it was sent back to its origin.
A meeting with American television companies (ABC, Métromédia, NBC) created the series The Undersea World of Jacques Cousteau, with the character of the commander in the red bonnet inherited from standard diving dress) intended to give the films a “personalized adventure” style. This documentary television series ran for ten years from 1966 to 1976. A second documentary series, The Cousteau Odyssey, ran from 1977 to 1982, among others.In 1970, he wrote the book The Shark: Splendid Savage of the Sea with Philippe, his son. In this book, Costeau described the oceanic whitetip shark as “the most dangerous of all sharks”.In 1973, along with his two sons and Frederick Hyman, he created the Cousteau Society for the Protection of Ocean Life, Frederick Hyman being its first President; it now has more than 300,000 members.On December 1975, two years after the volcano’s last eruption, The Cousteau Society was filming Voyage au bout du monde on Deception Island, Antarctica, when Michel Laval, Calypso’s second in command, was struck and killed by a propeller of the helicopter that was ferrying between Calypso and the island.
In 1976, Cousteau uncovered the wreck of HMHS Britannic. He also found the wreck of the French 17th-century ship-of-the-line La Therese in coastal waters of Crete.In 1977, together with Peter Scott, he received the UN International Environment prize.On 28 June 1979, while the Calypso was on an expedition to Portugal, his second son, Philippe, his preferred and designated successor and with whom he had co-produced all his films since 1969, died in a PBY Catalina flying boat crash in the Tagus river near Lisbon. Cousteau was deeply affected. He called his then eldest son, the architect Jean-Michel Cousteau, to his side. This collaboration lasted 14 years.In 1975 John Denver released the tribute song “Calypso” on his album “Windsong”, and on the B-side of his hit song “I’m Sorry”. “Calypso” became a hit on its own and was later considered the new A-side, reaching #2 on the charts.
From 1980 to 1981, he was a regular on the animal reality show Those Amazing Animals, along with Burgess Meredith, Priscilla Presley, and Jim Stafford. In 1980, Cousteau traveled to Canada to make two films on the Saint Lawrence River and the Great Lakes, Cries from the Deep and St. Lawrence: Stairway to the Sea. In 1985, he received the Presidential Medal of Freedom from Ronald Reagan.On 24 November 1988, he was elected to the Académie française, chair 17, succeeding Jean Delay. His official reception under the Cupola took place on 22 June 1989, the response to his speech of reception being given by Bertrand Poirot-Delpech. After his death, he was replaced under the Cupola by Érik Orsenna on 28 May 1998.In June 1990, the composer Jean Michel Jarre paid homage to the commander by entitling his new album Waiting for Cousteau. He also composed the music for Cousteau’s documentary “Palawan, the last refuge” .
Sadly On 2 December 1990, his wife Simone Cousteau died of cancer however In June 1991, Jacques-Yves Cousteau remarried, to Francine Triplet, with whom he had (before this marriage) two children, Diane and Pierre-Yves. Francine Cousteau currently continues her husband’s work as the head of the Cousteau Foundation and Cousteau Society. From that point, the relations between Jacques-Yves and his elder son worsened. In November 1991, Cousteau gave an interview to the UNESCO Courier, in which he stated that he was in favour of human population control and population decrease and in 1992, he was invited to Rio de Janeiro, Brazil, for the United Nations’ International Conference on Environment and Development, and then he became a regular consultant for the UN and the World Bank. In 1996, he sued his son who wished to open a holiday centre named “Cousteau” in the Fiji Islands. On 11 January 1996, Calypso was rammed and sunk in Singapore Harbour by a barge. The Calypso was refloated and towed home to France. Cousteau is buried in a Roman Catholic Christian funeral in the family vault at Saint-André-de-f in France. A street was renamed “rue du Commandant Cousteau”, in his honour and a commemorative plaque was affixed to his house.
Daylight Appreciation Day takes place annually on 21. It was created On 21 June 2015 to highlight natural light’s importance to our well-being. Daylight is described as the combination of all direct and indirect sunlight during the daytime. This includes direct sunlight, diffuse sky radiation, and (often) both of these reflected by the Earth and terrestrial objects, like landforms and buildings. Sunlight scattered or reflected by objects in outer space (that is, beyond the Earth’s atmosphere) is generally not considered daylight. Thus, daylight excludes moonlight, despite it being indirect sunlight. Daytime is the period of time each day when daylight occurs. Daylight happens as Earth rotates, and either side on which the Sun shines is considered daylight.
Daylight is present at a particular location, to some degree, whenever the Sun is above the local horizon. (This is true for slightly more than 50% of the Earth at any given time. For an explanation of why it is not exactly half, see here). However, the outdoor illuminance can vary from 120,000 lux for direct sunlight at noon, which may cause eye pain, to less than 5 lux for thick storm clouds with the Sun at the horizon (even <1 lux for the most extreme case), which may make shadows from distant street lights visible. It may be darker under unusual circumstances like a solar eclipse or very high levels of atmospheric particulates, which include smoke and volcanic ash
Daylighting is lighting an indoor space with openings such as windows and skylights that allow daylight into the building. This type of lighting is chosen to save energy, to avoid hypothesized adverse health effects of over-illumination by artificial light, and also for aesthetics. The amount of daylight received into an indoor space or room is defined as a daylight factor, being the ratio between the measured internal and external light levels. Artificial lighting energy use can be reduced by simply installing fewer electric lights because daylight is present, or by dimming/switching electric lights automatically in response to the presence of daylight, a process known as daylight harvesting.
In recent years, work has taken place to recreate the effects of daylight artificially. This is however expensive in terms of both equipment and energy consumption and is applied almost exclusively in specialist areas such as filmmaking, where light of such intensity is required anyway. In some filmmaking locations, such as Sweden or Norway, there is too much light due to long summer days. As a result, in location films such as Marianne (2011), night scenes have to be shot during daylight hours and are digitally altered later.
More International and National Events happening 21 June
Atheist Solidarity Day
Daylight Appreciation Day
Day of the Gong
Go Skateboarding Day
International Yoga Day
National Seashell Day
Peaches ‘N’ Cream Day
World Humanist Day
World Hydrography Day, takes place annually on 21 June. It was adopted by the International Hydrographic Organization as an annual celebration to publicise the work of hydrographers and the importance of hydrography. Hydrography deals with the measurement and description of the physical features of oceans, seas, coastal areas, lakes and rivers, as well as with the prediction of their change over time, for the primary purpose of safety of navigation and in support of all other marine activities, including economic development, security and defence, scientific research, and environmental protection.
The date chosen for World Hydrography Day is the anniversary of the founding of the International Hydrographic Organization which was established in 1921 for the purpose of providing a mechanism for consultation between governments on such matters as technical standards, safe navigation and the protection of the marine environment. The IHO is actively engaged in developing standards and interoperability, particularly in relation to the challenges brought about by digital technologies.
Large scale Hydrography is usually undertaken by national or international organizations which sponsor data collection through precise surveys and publish charts and descriptive material for navigational purposes. The science of oceanography is, in part, an outgrowth of classical hydrography. In many respects the data are interchangeable, but marine hydrographic data will be particularly directed toward marine navigation and safety of that navigation. Marine resource exploration and exploitation is a significant application of hydrography, principally focused on the search for hydrocarbons.
Hydrographical measurements include the tidal, current and wave information of physical oceanography. They include bottom measurements, with particular emphasis on those marine geographical features that pose a hazard to navigation such as rocks, shoals, reefs and other features that obstruct ship passage. Bottom measurements also include collection of the nature of the bottom as it pertains to effective anchoring. Unlike oceanography, hydrography will include shore features, natural and manmade, that aid in navigation. Therefore, a hydrographic survey may include the accurate positions and representations of hills, mountains and even lights and towers that will aid in fixing a ship’s position, as well as the physical aspects of the sea and seabed.
Hydrography charts normally portray what is safe for navigation, and therefore will usually tend to maintain least depths and occasionally de-emphasize the actual submarine topography that would be portrayed on bathymetric charts, which are used to avoid accident. The latter are best representations of the actual seabed, as in a topographic map, for scientific and other purposes. Trends in hydrographic practice since c. 2003–2005 have led to a narrowing of this difference, with many more hydrographic offices maintaining “best observed” databases. This has been coupled with a preference for multi-use surveys, so that the same data collected for nautical charting purposes can also be used for bathymetric portrayal.
Even though, in places, hydrographic survey data may be collected in sufficient detail to portray bottom topography in some areas, hydrographic charts only show depth information relevant for safe navigation and do not show an accurate portrayal of the actual shape of the bottom. The soundings selected from the raw source depth data for placement on the nautical chart are selected for safe navigation and are biased to show predominately the shallowest depths, if there is a deep area that can not be reached because it is surrounded by shallow water, the deep area may not be shown. The color filled areas that show different ranges of shallow water are not the equivalent of contours on a topographic map since they are often drawn seaward of the actual shallowest depth portrayed. A bathymetric chart does show marine topology accurately. Details covering the above limitations can be found in Part 1 of Bowditch’s American Practical Navigator. Another concept that affects safe navigation is the sparsity of detailed depth data from high resolution sonar systems. In more remote areas, the only available depth information has been collected with lead lines. This collection method drops a weighted line to the bottom at intervals and records the depth, often from a rowboat or sail boat. There is no data between soundings or between sounding lines to guarantee that there is not a hazard such as a wreck or a coral head waiting there to ruin a sailor’s day. Often, the navigation of the collecting boat does not match today’s GPS navigational accuracies. The hydrographic chart will use the best data available and will caveat its nature in a caution note or in the legend of the chart.
A hydrographic survey is quite different from a bathymetric survey in some important respects, particularly in a bias toward least depths due to the safety requirements of the former and geomorphologic descriptive requirements of the latter. Historically, this could include echosoundings being conducted under settings biased toward least depths, but in modern practice hydrographic surveys typically attempt to best measure the depths observed, with the adjustments for navigational safety being applied after the fact.
Hydrography of streams includes information on the stream bed, flows, water quality and surrounding land. Basin or interior hydrography pays special attention to rivers and potable water although if collected data is not for ship navigational uses, and is intended for scientific usage, it is more commonly called hydrology. Hydrography of rivers and streams is also an integral part of water management. Most reservoirs in the United States use dedicated stream gauging and rating tables to determine inflows into the reservoir and outflows to irrigation districts, water municipalities and other users of captured water. River/stream hydrographers use handheld and bank mounted devices, to capture a sectional flow rate of moving water through a section.
Each World Hydrography Day has a different theme, these are determined by the Member States of the International Hydrographic Organization in order to promote the importance of hydrography internationally. The theme for World Hydrography Day 2018 is “Bathymetry – the foundation for sustainable seas, oceans and waterways”. Previous themes for World Hydrography day have included Safety at sea and protection of sensitive areas, multilateral cooperation and effective collaboration in data exchange, charting and standards development, Mapping our seas, oceans and waterways, charting our seas and waterways, Hydrography – underpinning the Blue Economy, Hydrography’s importance in managing seas and waterways, supporting safe navigation, Human Resources regarding Hydrography, the Importance of the Hydrographic Services, Hydrography for Protecting the marine environment, The importance of Electronic Navigational Charts (ENCs), safety at sea and efficient maritime practices.
The World Day to Combat Desertification and Drought takes place each June 17. The purpose of the world Day to combat desertification and drought is to educate people concerning the causes of drought and highlight ways to prevent desertification and recover from drought. Each annual celebration has a different theme. Desertification is a type of land degradation in which relatively dry area of land becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife. It is caused by a variety of factors, such as through climate change and through the overexploitation of soil through human activities. When deserts appear automatically over the natural course of a planet’s life cycle, then it can be called a natural phenomenon; however, when deserts emerge due to the rampant and unchecked depletion of nutrients in soil that are essential for it to remain arable, then a virtual “soil death” can be spoken of, which traces its cause back to human overexploitation. Desertification is a significant global ecological and environmental problem. Desertification is defined as “the process of fertile land transforming into desert typically as a result of deforestation, drought or improper/ inappropriate agriculture”. Desertification Is defined by the United Nations Convention to Combat Desertification (UNCCD) as “land degradation in arid, semi-arid and dry sub-humid regions resulting from various factors, including climatic variations and human activities.
The world’s most noted deserts were formed by natural processes interacting over long intervals of time. During most of these times, deserts have grown and shrunk independent of human activities. Paleodeserts are large sand seas now inactive because they are stabilized by vegetation, some extending beyond the present margins of core deserts, such as the Sahara, the largest hot desert. The immediate cause of desertification is the loss of most vegetation. This is driven by a number of factors, such as drought, climatic shifts, tillage for agriculture, overgrazing and deforestation for fuel or construction materials. Vegetation plays a major role in determining the biological composition of the soil. Studies have shown that, in many environments, the rate of erosion and runoff decreases exponentially with increased vegetation cover. Unprotected, dry soil surfaces blow away with the wind or are washed away by flash floods, leaving infertile lower soil layers that bake in the sun and become an unproductive hard the controlled movement of herds of livestock, mimicking herds of grazing wildlife, may help to reverse desertification.
Desertification has played a significant role in human history, contributing to the collapse of several large empires, such as Carthage, Greece, and the Roman Empire, as well as causing displacement of local populations. Historical evidence shows that the serious and extensive land deterioration occurring several centuries ago in arid regions had three epicenters: the Mediterranean, the Mesopotamian Valley, and the Loess Plateau of China, where population was dense. At least 90% of the inhabitants of drylands live in developing nations, where they also suffer from poor economic and social conditions. This situation is exacerbated by land degradation because of the reduction in productivity, the precariousness of living conditions and the difficulty of access to resources and opportunities. A downward spiral is created in many underdeveloped countries by overgrazing, land exhaustion and overdrafting of groundwater in many of the marginally productive world regions due to overpopulation pressures to exploit marginal drylands for farming. Decision-makers are understandably averse to invest in arid zones with low potential. This absence of investment contributes to the marginalisation of these zones. When unfavourable agro-climatic conditions are combined with an absence of infrastructure and access to markets, as well as poorly adapted production techniques and an underfed and undereducated population, most such zones are excluded from development. Desertification often causes rural lands to become unable to support the same sized populations that previously lived there. This results in mass migrations out of rural areas and into urban areas, particularly in Africa. These migrations into the cities often cause large numbers of unemployed people, who end up living in slums.
The 2030 Agenda for Sustainable Development declares that “we are determined to protect the planet from degradation, including through sustainable consumption and production, sustainably managing its natural resources and taking urgent action on climate change, so that it can support the needs of the present and future generations”. Specifically, SDG Goal 15: Life on Land states the resolve of the United Nations and the SDG signatory nations to halt and reverse land degradationTechniques and countermeasures exist for mitigating or reversing the effects of desertification. One controversial solution is to manager population growth. Another way of mitigating Desertification is to adopt sustainable agricultural practices. However the costs of adopting these sometimes exceed the financial benefits for individual farmers, even while they are socially and environmentally beneficial. Another issue is a lack of political will, and lack of funding to support land reclamation and anti-desertification programs.
Desertification is recognized as a major threat to biodiversity. Some countries have developed Biodiversity Action Plans to counter its effects, particularly in relation to the protection of endangered flora and fauna. Reforestation can help stop one root cause of desertification and is not just treat of the symptoms. In many places deforestation and desertification are contributing to extreme poverty and many organisations focus on educating the local population about the dangers of deforestation and sometimes employ them to grow seedlings, which they transfer to severely deforested areas during the rainy season. The Food and Agriculture Organization of the United Nations launched the FAO Drylands Restoration Initiative in 2012 to draw together knowledge and experience on dryland restoratio In 2015, FAO published global guidelines for the restoration of degraded forests and landscapes in drylands, in collaboration with the Turkish Ministry of Forestry and Water Affairs and the Turkish Cooperation and Coordination Age.
Currently, one of the major methods that has been finding success in this battle with desertification is China’s “Great Green Wall.” This plan was proposed in the late 70’s, and has become a major ecological engineering project involving the planting of nearly 66,000,000,000 tress planted in China’s great green wall. It’s success depends upon providing enough water, Fixating and hyper-fertilizing soil. Fixating the soil is often done through the use of shelter belts, woodlots and windbreaks. Windbreaks are made from trees and bushes and are used to reduce soil erosion and evapotranspirati. Due to lack of water some soils can become consolidated rather than porous (as in the case of sandy soils. techniques such as zaï or tillage are then used to still allow the planting of crop
Another technique that is useful is contour trenching. This involves the digging of 150m long, 1m deep trenches in the soil. The trenches are made parallel to the height lines of the landscape, preventing the water from flowing within the trenches and causing erosion. Stone walls are placed around the trenches to prevent the trenches from closing up again. The method was invented by Peter Westerveld. Enriching of the soil and restoration of its fertility is often done by plants. Of these, leguminous plants which extract nitrogen from the air and fix it in the soil, and food crops/trees as grains, barley, beans and dates are the most important. Sand fences can also be used to control drifting of soil and sand erosion. Some research centra (such as Bel-Air Research Center IRD/ISRA/UCAD) are also experimenting with the inoculation of tree species with mycorrhiza in arid zones. The mycorrhiza are basically fungi attaching themselves to the roots of the plants. They create a symbiotic relation with the trees, increasing the surface area of the tree’s roots greatly (allowing the tree to gather much more nutrients from the soil.
As there are many different types of deserts, there are also different methods to stop desertification. For instance the salt-flats in the Rub’ al Khali desert in Saudi-Arabia are one of the most promising desert areas for seawater agriculture and could be revitalized without the use of freshwater or much energy. Farmer-managed natural regeneration (FMNR) is another technique that has produced successful results for desert reclamation. Since 1980, this method to reforest degraded landscape has been applied with some success in Niger. This simple and low-cost method has enabled farmers to regenerate some 30,000 square kilometers in Niger. The process involves enabling native sprouting tree growth through selective pruning of shrub shoots. The residue from pruned trees can be used to provide mulching for fields thus increasing soil water retention and reducing evaporation. Additionally, properly spaced and pruned trees can increase crop yields. The Humbo Assisted Regeneration Project which uses FMNR techniques in Ethiopia has received money from The World Bank’s BioCarbon Fund, which supports projects that sequester or conserve carbon in forests or agricultural ecosystems.
More International and National Holidays and events happening on 17 June
Not to be confused with World Turtle Day, World Sea Turtle Day takes place annually on on 16 June. It was created by the National Oceanic and Atmospheric Administration (NOAA) to provide helpful information and educate people concerning the importance of preserving turtle species by protecting disappearing habitats, cleaning up the world’s oceans regarding pollution, plastic waste and other litter and caring for Turtle species throughout the world.
Tortoises and Turtles comprise some of the most amazing and endangered reptiles on the planet, so World Turtle Day was set up to increase respect and knowledge of Turtles and Tortoises and to encourage human action to help them survive and thrive. Turtle Day Is sponsored by American Tortoise Rescue, and celebrated worldwide in a variety of ways, from dressing up as turtles or wearing green summer dresses, to saving turtles caught on highways, and research activities. Turtle Day lesson plans and craft projects encourage teaching about turtles in classrooms.
Turtles are diapsids of the order Testudines (or Chelonii) characterized by a special bony or cartilaginous shell developed from their ribs and acting as a shield. “Turtle” may refer to the order as a whole (American English) or to fresh-water and sea-dwelling testudines (British English). The order Testudines includes both extant (living) and extinct species. The earliest known members of this group date from 220 million years ago, making turtles one of the oldest reptile groups and a more ancient group than snakes or crocodilians. Of the 356 known species alive today, some are highly endangered.
Tortoises also belong to the family Testudinidae under the order Testudines and suborder Cryptodira. There are fourteen extant families of the order Testudines, an order of reptile commonly known as turtles, tortoises, and terrapins. The suborder Cryptodira (Greek: hidden neck) is a suborder of Testudines that includes most living tortoises and turtles. Cryptodira differ from Pluerodia (side-neck turtles) in that they lower their necks and pull the heads straight back into the shells, instead of folding their necks sideways along the body under the shells’ marginals.The testudines are some of the most ancient reptiles alive. Tortoises are shielded from predators by a shell. The top part of the shell is the carapace, the underside is the plastron, and the two are connected by the bridge. The carapace is fused to both the vertebrae and ribcage, and tortoises are unique among vertebrates in that the pectoral and pelvic girdles are inside the ribcage rather than outside. Tortoises can vary in size from a few centimeters to two meters. They are usually diurnal animals with tendencies to be crepuscular depending on the ambient temperatures. They are generally reclusive animals. Tortoises are the longest living land animal in the world, although the longest living species of tortoise is a matter of debate. Galápagos tortoises are noted to live over 150 years, but an Aldabra giant tortoise named Adwaita may have been the longest living at an estimated 255 years. In general, most tortoise species can live 80-150 years.
Both Turtles and tortoises are ectotherms—animals commonly called cold-blooded—meaning that their internal temperature varies according to the ambient environment. However, because of their high metabolic rate, leatherback sea turtles have a body temperature that is noticeably higher than that of the surrounding water. Turtles are classified as amniotes, along with other reptiles, birds, and mammals. Like other amniotes, turtles breathe air and do not lay eggs underwater, although many species live in or around water. The study of turtles is called cheloniology, after the Greek word for turtle. It is also sometimes called testudinology, after the Latin name for turtles.
Global Wind Day takes place annually on 15 June. It is organised by EWEA (European Wind Energy Association) and GWEC (Global Wind Energy Council) to educate people about the renewable and clean nature of wind energy, its power and the possibilities it holds to change the world. In association with EWEA and GWEC, national wind energy associations and companies involved in wind energy production organise events in many countries around the world. In 2011, there were events organised in 30 countries, on 4 continents. Events included visits to onshore and offshore wind farms, information campaigns, demonstration turbines being set up in cities, wind workshops and a wind parade. Many events are organised for Global Wind Day (15 June) itself, but there are also many events held on the days and weeks before and afterwards. In 2012 there were 250 events around the globe and a very popular photo competition.
Wind describes the flow of gases on a large scale. Over the surface of the Earth, wind consists of the bulk movement of air. In outer space, solar wind is the movement of gases or charged particles from the Sun through space, while planetary wind is the outgassing of light chemical elements from a planet’s atmosphere into space. Winds are commonly classified by their spatial scale, their speed, the types of forces that cause them, the regions in which they occur, and their effect. The strongest observed winds on a planet in the Solar System occur on Neptune and Saturn. Winds have various aspects: velocity (wind speed); the density of the gas involved; energy content or wind energy. Wind is also an important means of transportation for seeds and small birds; with time things can travel thousands of miles in the wind.
In meteorology, winds are often referred to according to their strength, and the direction from which the wind is blowing. Short bursts of high-speed wind are termed gusts. Strong winds of intermediate duration (around one minute) are termed squalls. Long-duration winds have various names associated with their average strength, such as breeze, gale, storm, and hurricane. Wind occurs on a range of scales, from thunderstorm flows lasting tens of minutes, to local breezes generated by heating of land surfaces and lasting a few hours, to global winds resulting from the difference in absorption of solar energy between the climate zones on Earth. The two main causes of large-scale atmospheric circulation are the differential heating between the equator and the poles, and the rotation of the planet (Coriolis effect). Within the tropics, thermal low circulations over terrain and high plateaus can drive monsoon circulations. In coastal areas the sea breeze/land breeze cycle can define local winds; in areas that have variable terrain, mountain and valley breezes can dominate local winds.
In human civilization, the concept of wind has been explored in mythology, influenced the events of history, expanded the range of transport and warfare, and provided a power source for mechanical work, electricity and recreation. Wind powers the voyages of sailing ships across Earth’s oceans. Hot air balloons use the wind to take short trips, and powered flight uses it to increase lift and reduce fuel consumption. Areas of wind shear caused by various weather phenomena can lead to dangerous situations for aircraft. When winds become strong, trees and human-made structures are damaged or destroyed.
Winds can shape landforms, via a variety of aeolian processes such as the formation of fertile soils, such as loess, and by erosion. Dust from large deserts can be moved great distances from its source region by the prevailing winds; winds that are accelerated by rough topography and associated with dust outbreaks have been assigned regional names in various parts of the world because of their significant effects on those regions. Wind also affects the spread of wildfires. Winds can disperse seeds from various plants, enabling the survival and dispersal of those plant species, as well as flying insect populations. When combined with cold temperatures, wind has a negative impact on livestock. Wind affects animals’ food stores, as well as their hunting and defensive strategies.
WindEurope, formerly the European Wind Energy Association (EWEA), is an association based in Brussels, promoting the use of wind power in Europe. It has over 600 members, which are active in over 50 countries, including manufacturers with a leading share of the world wind power market, component suppliers, research institutes, national wind and renewables associations, developers, contractors, electricity providers, finance companies, insurance companies, and consultants.
The Global Wind Energy Council (GWEC) was established in 2005 to provide a credible and representative forum for the entire wind energy sector at an international level. GWEC’s mission is to ensure that wind power is established as one of the world’s leading energy sources, providing substantial environmental and economic benefits. A new report launched by the Global Wind Energy Council predicts that, despite temporary supply chain difficulties, international wind markets are set to continue their strong growth. In 2006, total installed wind power capacity increased by 25% globally, generating some €18 billion (US$23 billion) worth of new generating equipment and bringing global wind power capacity up to more than 74GW. While the European Union is still the leading market in wind energy with over 48GW of installed capacity, other continents such as North America and Asia are developing quickly.
more International and National Events happening on 15 June