Saving the world's climate

Representatives from 180 countries held two weeks of negotiations in Buenos Aires in November on how to tackle the urgent problems threatening our environment. BBC News Online's special coverage examines the outcome and the challenges they faced.

UK rejects attack on climate deal (15 November)

Deal reached at last minute (14 November)

US boost for climate conference (12 November)

Deadlock threatens climate talks (12 November)

Walruses 'threatened by climate change' (9 November)

'Warmer world threatens health' (6 November)

Controversy as conference opens (2 November)

Grim warning for meeting (2 November)

Climate threatens 'third of forests' (30 October)

Global warming: Your questions answered
Environment Correspondent Alex Kirby answers your questions online about global warming and what it means for us.

A change in the atmosphere
Former UK environment minister John Gummer writes for BBC News Online about what the summit achieved.

Does the meeting matter?
What is the point of the gathering involving representatives of 180 countries in Buenos Aires? Alex Kirby explains.

Global warming: The facts
Every time severe weather strikes, global warming seems to be blamed. But what is it and should we be worried?

Changing for the worse
Rising sea levels, higher temperatures and more greenhouse emissions: See where these trends are heading in our series of graphics.

The global impact of climate change
How climate change could affect different parts of the world - from droughts to flooding.

What is carbon trading?
In the highly developed arena of global capitalism everything has its price - even the Earth's future.

Talking point online debate:
Is Europe serious about being green?

The thawing of Alaska
Robert Pigott reports from Alaska, where fractional changes in the global temperature are having a devastating effect on the wilderness and wildlife.

Trading in pollution
Traders on London's International Petroleum Exchange have their eyes on what will soon become a highly-prized commodity - the permission to pollute: Tim Hirsch reports.