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(Video at source)A group of international researchers say they have uncovered possible evidence of a warmer climate in Alaska — dating back to when dinosaurs roamed the Earth. Dr. Tony Fiorillo of the Perot Museum of Nature and Science in Dallas, Texas, and his team are fresh back from a three-week, remote expedition to Aniakchak National Monument and Preserve. During that time, Fiorillo says the researchers discovered what appeared to be a crayfish burrow. How do crayfish fit in with dinosaurs? We wondered that too. "They lived with the dinosaurs," Fiorillo explained. "As you can imagine, in Anchorage, there aren't...

To the rhinos and crocodiles of the far north, the day was like any other. They ate, swam and napped, unaware a celestial body was headed their way at 60,000 miles per hour. Suddenly, a wayward comet screamed into the atmosphere, struck Earth and created a bowl a mile deep and 15 miles in diameter.

Canadian geologists have found more evidence that impact craters may, in fact, be the best places to look for signs of past life on Mars and other worlds, and could even have been the place life began on Earth... It was during some field work on the 15-mile (24 kilometer) wide Haughton crater that he and his colleagues recognized what appeared to be the remains of hydrothermal structures. These would have been steaming vents at one time, releasing heat for millennia that had been generated by the impact event.

WASHINGTON - Scientists have found what might have been the ideal ancient vacation hotspot with a 74-degree Fahrenheit average temperature, alligator ancestors and palm trees. It's smack in the middle of the Arctic. First-of-its-kind core samples dug up from deep beneath the Arctic Ocean floor show that 55 million years ago an area near the North Pole was practically a subtropical paradise, three new studies show. The scientists say their findings are a glimpse backward into a much warmer-than-thought polar region heated by run-amok greenhouse gases that came about naturally. Skeptics of man-made causes of global warming have nothing to...