Most scientists agree that the impact of an asteroid hitting Earth played a major role in the extinction of dinosaurs but now there's a brand new theory about how exactly that happened.
The office of Montana’s Republican attorney general is appealing a landmark climate change ruling that said state agencies aren't doing enough to protect 16 young plaintiffs from harm caused by global warming.
A coalition of environmental groups is calling on the federal government to enact emergency rules to protect a vanishing species of whale from lethal collisions with large ships.