That's according to The New York Times, which acquired a draft copy of the report by scientists from 13 federal agencies.
The report says extreme heat waves have become more common and extreme cold waves less common since the 1980s.
Also Read
One scientist cited anonymously by the Times says he and other researchers are worried that the Trump administration, which must approve the report's release, will suppress it.
(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)