[Michael Mann: one of the "heroes of the environmental movement"?]

Two experts and heroes of the environmental movement – Dr. Robert Bullard, the father of environmental justice, and Dr. Michael Mann, one of the world’s preeminent climate scientists, were the keynote speakers. (Stay tuned for videos of their presentations.)

This podcast features a panel discussion on global warming policies that are great for the environment, the economy, and create great green jobs.

Nebraska: Record overnight lows in Panhandle

Jesse Lundquist, a meteorologist with the National Weather Service in Cheyenne, Wyo., said the temperature in Alliance, Neb., dropped to 14. The previous record for May 8 was 29 set in in 1976.

In Scottsbluff, the temperature dropped to 21. The previous record was 23 from 1898. Sidney's temperature fell to 25. The previous record was 27 in 2002.