If greenhouse gas emissions progress , Earth will become hotter than ever in 90 years . The temperature rise during man-made global warming has not happened before . 1900 - 1909 was one of the coldest decades in 11,300 years . Comment:
If greenhouse gas emissions progress , Earth will become hotter than ever in 90 years . The temperature rise during man-made global warming has not happened before . 1900 - 1909 was one of the coldest decades in 11,300 years . 2000 - 2009 was one of the hottest decades in 11,300 years .