Arctic sea ice will almost disappear in summertime by 2040, predicted the National Center for Atmospheric Research, and geologists said that global warming might cause shallow deposits of frozen methane to melt, thus accelerating climate change.
Arctic sea ice will almost disappear in summertime by 2040, predicted the National Center for Atmospheric Research, and geologists said that global warming might cause shallow deposits of frozen methane to melt, thus accelerating climate change.