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  • VOA英语2010年-Mummified Forest Reveals Clues About Climate

    A discovery of a mummified forest that's between two and 10 million years old is giving scientists a new window on climate change. Joel Barker, a research scientist at the Byrd Polar Research Center at the Ohio State University, discovered the mummif...

  • SSS 2009-11-26

    Roughly 1,000 years ago, Europe enjoyed several centuries of balmier average temperatures. Dubbed the Medieval Warm Period, it was the last time before the present that agriculture could flourish in Greenland. This era also provided fodder for countl...

  • SSS 2008-09-24

    This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres a Native American site in Ohio that appeared to be a fort. But recent discoveries by archaeologists at the University of Cincinnati show thats n...

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