Researchers say we need to cut our red meat consumption down to two portions a week to save the planet
Deforestation and climate change drive extinction rates to 1,000 times their normal level
Researcher claims his paper was rejected because it might help climate sceptics advance their case
Catastrophic climate change can only be averted if we adopt nuclear, wind and solar power in a big way, says UN
UN panel publishes most comprehensive climate change study yet, but will it prove controversial?
Rowan Williams blames climate change on the West on eve of publication of latest UN climate report
Haiyan may have been the world's most powerful storm, but was it a natural disaster - or manmade?
UN report says world getting warmer and humans to blame, but UK will cool if Gulf Stream slows
Twister was a category four storm that struck the suburb of Moore with just five minutes' warning
The US President's 'wide-ranging' State of the Union address sets out a bold vision for his second term
President makes gay rights paramount as many welcome surprisingly liberal second-term agenda
Four challenges for Obama when he returns to the Oval Office after today's inauguration celebrations
Scientists hope 2012's record-breaking heat will drive climate change onto the political agenda
New York mayor Michael Bloomberg throws his weight behind the President. Will it make a difference?
Heathrow unguarded, a climate change sceptic at Environment and a green belt sceptic at Planning
Nearly all of Greenland's ice sheet began to melt for a few days in July. Is climate change to blame?
Petermann Glacier calves a second iceberg in two years, raising concerns at the rapid pace of ice loss
Opinion digest: David Cameron and Tory re-branding, a tip for England at Euro 2012 and Europe's impending dark age
Lord Smith gives guarded support for fracking as he tackles government over green issues