Why did Americans who just won their freedom immediately worry about their new government? In 1791, fear of tyranny led to ten powerful amendments...
In 1970, a Smithsonian scientist warned that 80% of all animal species would vanish by 1995. A Stanford professor predicted hundreds of millions would...
Forget everything you thought you knew about pre-colonial America. When the Pilgrims arrived in 1620, they didn't find wilderness—they discovered a thriving civilization of...