What's the difference between earthquakes, aftershocks?05:04
Another powerful earthquake dealt another devastating blow to Nepal just as the country is still reeling from the last quake just over 2 weeks ago. Alex Wagner talks with physicist Dr. Michio Kaku.
Debating AOC and Green New Deal from different sides17:19
Toxic algae puts environment at the top of mind for Florida voters02:56
Pruitt confronted in restaurant; aides offer new details02:18
Joe: How much longer can Pruitt survive at EPA?07:00
Palace intrigue: Can Trump’s chief of staff and EPA head survive?07:12
The fight against oil drilling in the Gulf03:49