With climate change, we should act fairly soon in response to the timetable set by physics, argues author.

Climate-change deniers are on the ropes – but so is our planet.

Telling the truth about climate change would require pulling away the biggest punchbowl in history, says Bill McKibben.

It is time to stand up against the corporate takeover of American governmental institutions, says the author.

For Obama, global warming could prove to be a surprise winner as a campaign issue.

The US president’s approach to environmentalism has disappointed his early supporters.

Obama finally has the opportunity to make good on his environmental promises, but will he?