Body Temperature Is About 308 K On A Cold Day

Open moving to Northwest

The move to North-West shipping route is drawn between the Atlantic and the Pacific Altantico that passes through the Arctic archipelago of Canada.
Since the fifteenth century, Europeans tried to establish a route that passed just north west of our continent; nuomerose were the shipping and crew perished in the ice, but it was not until 1906 that the company was able, thanks to ' Norwegian explorer Roald Amudsen.
But he took as many as 3 years, too many because its route could be considered commercially exploitable. Other attempts followed, until 1944, when the route was covered in a season by a Canadian ship.
The transition between the ice has always made it dangerous and often deadly this way, many ships have been captured and their crews with them with no way out.

But now this historic shift seems to have become inaccessible for a walk.

It 's a news these days: Roger Swanson, a former pig farmer from Minnesota became an adventurer of the seas, at age 76 was able to sail on a ketch of 17 meters to cross this legendary smooth transition, as before him there was virtually no ice.

Almost simultaneously, the ESA (European Space Agency) studying photos of the area taken by the Envisat satellite, said that the ice reached the minimum levels for 30 years, ever since he began monitoring them.
These days the ice has been reduced to fewer than 3 million square kilometers! By 2020, this route could be constantly navigable, becoming commercially exploitable and saving 4000 km to the ships now being forced to cross the canadle of Panama.

But this is alarming from an environmental perspective, such a strong reduction of the ice at such a high speed, is to reconsider the current estimates. Global warming is here and is showing an obvious and increasingly urgent important to be aware of what is happening, to set environmental policies conscious and reasoned.

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birds and cables for high Praise voltage

you will wonder how the birds to perch on high voltage power lines without being electrocuted. Often seen whole flocks occupy the entire length of these cables in peace.

The answer to this question is quite simple: to generate electricity it takes a potential difference. Like a ball sliding on an inclined plane to the height difference between the highest and the lowest one, so the electricity needs of this "electric drop to scroll. The
Birds pose both legs on a single tension cable, which has its own electric potential. Does not pass then current in their bodies unless they touch with one leg to another cable with different potential, or soil. In these cases, close the electrical circuit thus formed, and these animals end up roasted.
until both legs are on the same electrical potential, the birds can use this particular roost without risk.

Dermatology Mottled Skin Images

platypus

The platypus is one of the strangest animals in nature and worth spending a few words to a mammal so special and so little regarded even by scientists themselves. Wrong to consider almost a mammal Series B, presents many peculiarities rather curious that link them to birds and reptiles, making it one of the most interesting animals to study.

The platypus is a small semi-aquatic mammal endemic to Australia, mainly distributed in south-east of this continent. Together
all'Echidna, is the only living representative of the monotremes. How do reptiles lay eggs with abundant yolk and keep for a lifetime single cloacal opening, which uses both for reproduction and to eliminate waste. It has no external ear, and three middle ear bones are more like those of ancient mammals that are currently covered. The
ornitorninco has a beak like that of birds, has no teeth (except as a puppy) and has an extra bone in the shoulder girdle, the interclavicola, absent in all other mammals. Proceeds at a brisk reptilian as he placed his paws on either side of the body and not below like all mammals.
This curious animal also has no nipples, but it produces a kind of milk to be modified sweat glands, which flows through tufts of hair placed in a kind of abdominal pocket.
Although warm-blooded, the temperature is less stable than other mammals and in tune with is around 32 ° C, compared to 38 ° (average) of other mammals.

The platypus is about 30 cm long, covered in fur, has all the flat tail and webbed feet wide where it accumulates fat reserves. Spends almost all his life in the water, where swimming with only front legs, using its tail and hind legs as a rudder.
It feeds on shrimp larvae and molluscs found in the muddy. In the water he keeps his eyes closed and locate prey with its beak and with a sensitive system elettrolocalizzazione much more sensitive than the bat. This animal burrows
builds long as 18 meters near the rivers, are usually open to the water, but those built specifically for the rearing of children have an opening to the air, to have more exchange of oxygen and the escape route in case of flooding.

The male platypus has, on each of the hind legs, an empty spur that used to inject a poison, which is useful for defense against predators or fighting for the territory. It is yet another unique feature of this animal, because it is the only known venomous species of mammal. This poison is lethal to small animals, not humans.

As I said, the platypus lays eggs, which have an incubation period of 10 days or so. At birth the young are free of hair and climbing up into the pocket where the mother's belly licking milk.
After 3-4 months spent in the den, children are ready to explore the world.

Another unique feature is the presence of 10 platypus sex chromosomes instead of 2 (X, Y) of most mammals. The system is very similar to that of birds, so that both the chromosome which is believed to decide the sex of unborn children is almost identical. The

oritorinco was discovered at the end of 700, but you have to wait until 1939 to ensure that the scientific world to notice him, as the stuffed specimens hitherto known were always considered a kind of false.

The platypus is a mammal not less, is the ancestor of placental mammals. It 'a survivor of a branch of ancestral mammals had its own history. Other mammals, marsupials and placentals, were developed later in a separate branch.

last grains: According to a legend of Australian aborigines, the platypus (which they called boonaburra) is the unique intersection, happened a long time ago, between a duck and a rat solitary water that kidnapped her. The duck, after the violence, gave birth to "two to four cubs but webbed feet, with the beak and fur."

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Unveiled the "mystery" hobbit

From "La Repubblica"

WASHINGTON - It 's been one of the most fascinating recent discoveries and discussed the history of anthropology, which has divided the scientific community. Now the Hobbit's saga - So it was dubbed the mysterious hominid whose remains were found minutes on the island of Flores, Indonesia, in 2003 - now has a new episode that could clarify once and for all the secret. This is really a new species of hominid - the nano and tiny brain - as claimed by its discoverers, was only an individual or smaller size, suffering from microcephaly, facial deformity which had brought his brains to shrink - as it argues the party opposite among scientists? Now, in a paper published in Science this week, an international research team led by Matthew Tocher, Department of Anthropology of the National Museum of Natural History's Smithsonian Institute Washington gives new strength to the theory that the Hobbit demonstrates a previously unknown species.
The scientists analyzed the bones of the wrist between the fossil was originally discovered in 2003 in the Liang Bua cave on the island of Flores in Indonesia, which until now had not been studied in detail. It argued that under morphological analysis of some fragments can be established that the Hobbits belonged to a species similar to other hominids so far discovered in Africa, but very different is that the Neanderthal man by Homo Sapiens. Homo floresiensis, as the researchers have named the name of the island, dating back to last Pleistocene. No physical abnormalities or growth defects, and then, but a separate species. Thus ends - at least for now - the debate: Homo floresiensis follows, therefore, to be released before a hominid Homo Sapiens, that of Neanderthals and their common ancestors.

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The most intelligent animals

E 'happened several times that I was asked what were the most intelligent animals.

The answer is not so easy, because we should first define what we mean by intelligence.

but I found this list, compiled by some scholars:

1. Bonobo chimpanzees: it shows selflessness, patience, compassion, kindness and sensitivity. Using primitive tools. Use sex for pleasure and not only for playback. It has a complex social structure.
2. Delfino has articulated a communication, includes the relationship between cause and effect, recognizes its mirror image. Includes sentences of artificial languages.
3. Elephant lives in a family and tribal structure evolved, is altruistic, communicate with infrasound and seismic waves (from the ground for example). He also learned that hundreds of commands.
4. Dog learns from experience and solve problems. It recognizes a large number of terms (also 200) and responds to them.
5. Crow: You can build a set of "tools" to be used for hunting. Can you imagine the development of a problem, and find a solution. This is followed in this ranking order: parrot, mouse, cat, horse and octopus.

of this ranking surprising perhaps 5 instead of the crow, before the cat or horse, while I am not surprised the octopus, which has been shown to have excellent skills in the laboratory whereas it is an invertebrate.

is surprising that the dolphin is able to recognize his image in the mirror, because this is a sign of self-consciousness.
Other animals that have this feature are the man and the great apes, but among them are genetically close relatives.
The fact that an animal with a brain so different from ours has developed such a rare talent, and makes one think opens new perspectives.
For over sixty years millions of tourists and the brain of a dolphin and a primate took different evolutionary paths, but seems to be calling the same self-consciousness.

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