A study released by Dr. James Hansen, the dean of climate scientists and director of the Nasa Goddard Institute for Space Studies, concludes that the recent heat waves and extreme summers likely were caused by climate change.
hot weather
Heat Wave Invades The U.S. Claims Human Lives, Affects Crops & Livestock
The heat wave began a week ago in the Plain states (Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota and South Dakota) and is expected to spread east through the weekend.