Monday, 23 September 2013
Sunday, 22 September 2013
Friday, 20 September 2013
Strange weather phenomenon ~ Mammatus clouds
Mammatus, also known as mammatocumulus (meaning "mammary cloud" or "breast cloud"), is a meteorologicalterm applied to a cellular pattern of pouches hanging underneath the base of a cloud. The name mammatus is derived from the Latin mamma (meaning "udder" or "breast").
Mammatus are most often associated with the anvil cloud and also severe thunderstorms. They often extend from the base of a cumulonimbus, but may also be found under altocumulus, altostratus, stratocumulus, and cirrus clouds, as well as volcanic ash clouds.[citation needed] In the United States, sky gazers may be most familiar with the very distinct and more common cumulonimbus mammatus.
Mammoth Cave
Mammoth Cave National Park is a U.S. National Park in central Kentucky, encompassing portions of Mammoth Cave, thelongest cave system known in the world. The official name of the system is the Mammoth-Flint Ridge Cave System for the ridge under which the cave has formed. The park was established as a national park on July 1, 1941. It became a World Heritage Site on October 27, 1981, and an international Biosphere Reserve on September 26, 1990.
About Animal migration ~ Unexlained natural phenomenon?
Many animals migrate thousands of miles of land and sea, all without the use of a GPS device. How do animals take these amazing journeys without getting lost? No one really knows, though there are many theories. According to an article in The Independent that focused on pigeon migration, some believe the birds navigate the Earth using visual landmarks or their sense of smell to determine their location. More bizarre-sounding theories include the concept that pigeons use magnetism to determine if they’re north or south of home; another is that the pigeons use morphic resonance, a theory by Rupert Sheldrake, to refer to what he calls the "the basis of memory in nature ... the idea of mysterious telepathy-type interconnections between organisms and of collective memories within species."
Animal migration is the relatively long-distance movement of individuals, usually on a seasonal basis. It is a ubiquitous phenomenon, found in all major animal groups, includingbirds, mammals, fish, reptiles, amphibians, insects, and crustaceans.[1] The trigger for the migration may be local climate, local availability of food, the season of the year or for mating reasons.[2] To be counted as a true migration, and not just a local dispersal or irruption, the movement of the animals should be an annual or seasonal occurrence, such asbirds migrating south for the winter; wildebeest migrating annually for seasonal grazing; or a major habitat change as part of their life, such as young Atlantic salmon leaving the river of their birth when they have reached a few inches in size.
One of the extremely animal species
Northern hairy-nosed wombat
The northern hairy-nosed wombat (Lasiorhinus krefftii), is one of three species of wombats. It is one of the rarest large mammals in the world and is critically endangered. Its historical range extended across New South Wales, Victoria, and Queensland as recently as 100 years ago, but it is now restricted to one place, a 3-km2 range within the 32-km2 Epping Forest National Park in Queensland. In 2003, the total population consisted of 113 individuals, including only around 30 breeding females.
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