The principle behind a carbon tax is simple, Cobb writes: Raise taxes on what you want less of and lower taxes on what you want more of.
A new study reveals that marine life is as active as ever, even in the depths of the dark polar night. The findings might affect how many viewed the polar night as a safe time for change.
Last year's volcanic eruption in Iceland released more than three times as much sulphur dioxide as all European industry combined.
More than two dozen walruses were found shot dead on the Alaskan shoreline, ringing alarm bells for a species already increasingly threatened by climate change.
With just 109 Sumatran rhinos left in the world, word that a wild rhino in Indonesia is pregnant has conservationists excited that her offspring could help bolster the species.