'Nobody is exempt from climate responsibility'
Could Christiana Figueres have the world's toughest job: getting all nations to agree how to tackle climate change? We talk to the UN's climate chief
Americans would pay more for green energy
The American public would pay extra to get green electricity, but partisan politics means their elected representatives still won't adopt it
Sauropod farts warmed the planet
Modern cows are a major source of methane, a greenhouse gas. Just think what must have come out of the biggest plant eating dinosaurs…
Global warming heats up tornado debate
Speculation is rife that a recent glut of killer tornadoes is a sign of rising temperatures. Harold Brooks unpicks the evidence
Australia's decade-long drought ends
The Big Dry has ended, but such droughts might be a sign of things to come for Australia as climate change influences natural cycles
Crucial environment satellite falls silent
Envisat has been out of contact for more than a week and may be beyond help, creating another gap in our monitoring of the planet
