Humans

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Study: Man-Made Global Warming To Cause 95 Percent Of Very Hot Days By 2050

If you find yourself sweating out a day that is monstrously hot, chances are you can blame humanity. A new report links three out of four such days to man’s effects on climate.

04/28/2015

(Photo credit: CESAR MANSO/AFP/Getty Images)

Ancient Pa. Dwelling Still Dividing Archaeologists

A fluke rainstorm at an ancient rock shelter in western Pennsylvania has brought a renowned archaeologist back to the site of where a furious debate was launched in 1973 over when the first humans came to the Americas.

08/11/2013