Earth news

Why is Greenland covered in ice?

There have been many reports in the media about the effects of global warming on the Greenland ice-sheet, but there is still great uncertainty as to why there is an ice-sheet there at all.

Aug 27, 2008 3.8 / 5 (65) 12

U.S. Crop Yields Could Wilt in Heat

(PhysOrg.com) -- Yields of three of the most important crops produced in the United States - corn, soybeans and cotton - are predicted to fall off a cliff if temperatures rise due to climate change.

Aug 24, 2009 4.5 / 5 (54) 5