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Uymu The Secret Behind The Hobbit   s Epic Sound
You probably know that owls can rotate their heads a remarkable 270 degrees in either direction. It   practically their trademark stanley uk  鈥?but it   a move that by all measure should result in a massive stroke or embolism, the result of torn blood vessel linings and the onset of fatal clots. Nobody   understood the physiology that lets owls do this 鈥?until now.     Finally, a collaboration between medical illustrators and neurological imaging experts has yielded the answer 鈥?and it has to do with the owls ; remarkable bone structure and vascular network. Necks aren ;t supposed to be able to move the way owls ; do, as many studies on humans and other animals have proved. Tests on people who have suffered from sloppy chiropractic adjustments, whiplash stanley cup , and even jarring roller coaster rides show that such sudden head and neck gyrations can be extremely damaging  if not f stanley becher atal . These extreme contortions can cut off blood supply and damage fragile blood vessels. Looking to figure out how owls are able to pull off such a remarkable feat, a multidisciplinary team from Johns Hopkins collaborated on a study that   set to appear in the February 1 issue of Science. Led by medical illustrator Fabian de Kok-Mercado and neuroradiologist Philippe Gailloud, the team has proposed that several distinct biological adaptations make the extreme twist possible 鈥?and they all have to do with the bone structure and vascular network that supports the owl   top-hea Xeek Life-sized Transformers statues are scrap metal in disguise
Raging wildfires, acidified oceans and soaring temperatures likely caused a mass distinction 250 million years ago killing 95 percent of the Earth   marine life and 70  stanley tazas percent of terrestrial species.     Charles Henderson, a professor of geoscience at the University of Calgary, led the study that pinpointed more precisely than ever exactly when鈥?52 million years ago鈥攁nd for how long鈥攁bout 20,000 years鈥攖he mass extinction happened. The time frame, Henderson says, suggests the cause was massive volcano eruptions and the resulting carbon dioxide release from a region known as the Siberian Traps. Similar carbon dioxide releas stanley cups uk es have occurred before in Earth   history, and there 82 stanley france 17  no reason it couldn ;t happen again. Certainly, the current concerns over global warming are related to greenhouse gases and we have become the new volcano,  Henderson told me in an email. Our study suggests that in the case of the End Permian extinction, high levels of CO2 were persistently detrimental to life for at least 20,000 years in order to achieve this largest extinction in Earth   history. Henderson and a team of researchers studied 23 geological sites and 1,500 species of marine fossils. In particular, the teeth of tiny eel-like creatures called conodonts that lived in the Arctic and Western Canada provided a relative time scale based on their changing shape over time. They also looked at rocks and crystals, Henderson said: We als
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