Arctic Ice Caps May Be More Prone to Melt. A new core pulled from Siberia reveals a 2.8-million-year history of warming and cooling - A new study suggests the polar region has experienced periods of intense warmth over the past 2.8 million years that may have been hot enough to melt the Greenland ice sheet. - Scientific American 06/25/12
Remember that dramatic 260-foot crater that was discovered in Siberia this past summer? In an effort to learn more about this mysterious hole, a team of Russian geologists has successfully climbed down to the bottom where they managed to perform tests and take some stunning photos.