EcoWatch: One of the worst North American droughts in history could be getting a whole lot worse. According to the latest U.S. Drought Monitor Map released on Tuesday, more than 58 percent of California is in an exceptional drought stage. Thats up a staggering 22 percent from last weeks report. And, in its latest drought report released earlier today, the National Drought Mitigation Center warned that bone-dry conditions are overtaking much of the Golden State, and noted that, overall, California is...