Global warming to make work miserable, study says - Science

http://science.nbcnews.com/_news/2013/02/24/17062733-global-warming-to-make-work-miserable-study-says?lite
Hot and muggy weather over the past few decades has led to about a 10 percent drop in the physiological capacity of people to do their work safely and those drops will be even greater as the climate continues to warm, a new study finds.