One consequence of more carbon dioxide in the atmosphere will be less nutritious rice, despite growth gains for some other crops.

The word "emissions” is bland and means nothing to most people. Maybe a cruder choice can embarrass them into realizing the urgency of the global environmental crisis.

As carbon dioxide in the atmosphere reaches a historic high point that could continue for a lifetime, summer temperatures are also heading toward record levels.

I was a junior in high school on April 22, 1970, on the first Earth Day, when environmentalism meant something different than it does now.

It will take time to de-suburbanize the U.S. and move habitations and jobs back into manageable cities, but the world doesn’t have that much time. That's why Tesla Motors' new gigafactory is very, very good news.

Thanks to deep-sea fish, the ocean absorbs about half of the carbon humans produce; Las Vegas' main water supply is a lake that just hit record-low levels; meanwhile, Bowe Bergdahl would not be alone in the "honorable history of war deserters." These discoveries and more after the jump.

Many U.S. companies are adopting their own carbon pricing systems, while in Europe there's a hint of new life for efforts to persuade industry to switch to low-carbon technologies.

Earth's sensitivity to a doubling of atmospheric carbon dioxide may be twice as great as scientists had thought, new climate records from the distant past suggest.

Several marine species are reacting badly to the increasing acidity of the world's oceans, caused by climate change as carbon dioxide dissolves in the water.