Is clean coal worth the costs?05:46
Chris Hayes talks to Jeff Biggers, chronicler of coal in America, about whether it makes sense to invest billions to try to burn coal more cleanly.
The inexplicable weirdness of Rick Scott04:31
Bad news for some blue state GOP governors05:30
Leaks from the Mike Brown investigation surface07:27
Amazing video of Ottawa post office evacuation01:35
Who was the Ottawa gunman?07:38
Shooting attack in Ottawa stuns Canada16:11