Feb 25, 2013 (All Things Considered) — It's not just the heat -- it's the humidity. Health experts actually apply that principle to workers, soldiers and sportsmen who toil outside and in places that lack air conditioning. A study in Nature Climate Change says that global warming will noticeably reduce the amount of time people can spend working and playing safely outside.
Missing some content? Check the source: NPR
Copyright(c) 2013, NPR