Study: Man-made extreme weather has hit all over the world

A new study finds most people on Earth have already felt extreme and record heat, drought or downpours goosed by man-made global warming.

In a first-of-its-kind study, researchers looked at weather stations worldwide and calculated that in 85 percent of the cases, the record for hottest day of the year had the fingerprints of climate change.

Heat-trapping gases from the burning of fossil fuels made those records more likely or more intense. Climate change's influence was spotted 57 percent of the time in records for lowest rainfall in a year and 41 percent of the time in records for most five-day downpours. The study is in today's Proceedings of the National Academy of Sciences.