carbon dioxide

Morning Open Thread

Morning Open Thread

Soot, also known as black carbon, is the second-leading cause of global warming after carbon dioxide, and it's totally preventable.

Lee Camp: How To Boil A Human

For the first time in 3 million years the atmospheric level of carbon dioxide is over 400 parts per million. Scientists say this is well beyond a sustainable level, and it's increasing every day.

Carbon Dioxide Hits Record Mark: 400 PPM

"We're in new territory for human beings--it's been millions of years since there's been this much carbon in the atmosphere. The only question now is whether the relentless rise in carbon can be matched by a relentless rise in the activism necessary to stop it."