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Why studying duck penises matters
The right-wing noise machine loves picking out its favorite targets of so-called government waste, but research matters--yes, even a study of duck genitalia. Chris Hayes describes how and why.
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