Study: Man-Made Global Warming To Cause 95 Percent Of Very Hot Days By 2050If 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.
Ancient Pa. Dwelling Still Dividing ArchaeologistsA 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.