The Observer

So who ate all the snacks? Even by their gargantuan standards of over-indulgence, couch potato Americans are preparing to outdo themselves during today's Super Bowl, the sporting highlight of the country's year. By Robin McKie

As British troops prepare to tackle the Taliban's remnants, hundreds of thousands of jobless Afghan refugees who returned home to start a new life are queueing up to leave again. By Dan McDougall

Engineers are struggling to stop the damage caused by crop irrigation. By Robin McKie

Hunger strikers are tied down and fed through nasal tubes, admits Guantánamo Bay doctor. By David Rose

Sports stars join campaign for trade justice as report says governments are not doing enough to protect environment. By Heather Stewart

The global hunger for oil is fuelling a new gold rush. Alex Duval-Smith reports from Hammerfest, northern Norway

Violence moves out of the suburbs for the first time while Paris prepares for the worst. By Alex Duval Smith

The secretive group of intellectuals who award the Nobel Prize for literature have delayed their decision for at least a week amid reports of a split over honouring the controversial Turkish author, Orhan Pamuk. By Alex Duval Smith

NOT JUST THE COWS' FAULT: In a multi-national study on methane, scientists have discovered evidence of the impact of human activity in centuries-old ice deposits

Extraordinary efforts by the White House to scupper Britain's attempts to tackle global warming have been revealed in leaked US government documents obtained by The Observer. By Mark Townsend.

There is nothing left to debate about climate change. It is happening and each of us must act. By Henry Porter

Up to 20 million Britons are expected to protest against world poverty as part of the biggest mobilisation against global inequality ever seen. By Mark Townsend, Nick Mathiason and Heather Stewart

Military says latest violence is sign of anti-terrorist success. By Peter Beaumont

The vocal minority sceptical of the threat of global warming are now targeting the UK, writes Conal Walsh

Peter Benenson, 1921-2005 Founder of Amnesty International

Avrupa Birliği zirvesinde Türkiye'ye verilecek yanıt 'Hayır' olursa Avrupa'nın mevcut sınırları dahilinde bir Hıristiyan kulübü olduğu teyit edilecek

Claims by Pro-Bush Think-Tank Outrage Eco-Groups

As the Americans tighten their grip around the stubborn rebel stronghold, Lindsey Hilsum is told that this time they are ready for the aftermath

We can't say we haven't been warned - rising temperatures, disappearing coastlines and dire predictions that climate change poses a greater threat than global terror ... Yet still we fly, drive, consume and pollute like never before. Where will it all end, asks Mark Townsend

Katharine Gun faced jail for revealing US plans to bug UN delegates in the run-up to the war on Iraq. Now the ex-GCHQ worker insists we should cherish our whistleblowers, not punish them

A country shocked by the alleged honour killing of a young mother is torn by its Islamic traditions

The world's biggest international aid agency has warned that tens of millions of the world's poorest people are threatened by an unprecedented wave of freak and extreme weather, and that aid workers may be unable to cope with the global humanitarian crisis that might result.

When Muhammad Khan was arrested in Lahore, the chilling details of al-Qaeda plots against the West provoked a wave of counter-measures and arrests

After a week of shattering revelations, Americans now know the truth about the extraordinary plot to attack their country and the chaos that overtook their leaders on that fateful day.

Shocked MP demands a rethink of the way government awards its security contracts. Special report by Antony Barnett, Solomon Hughes and Jason Burke

The 'outsider' who can heal the rifts

As history has revealed all too clearly, when soldiers become brutalised the moral struggle is lost, writes Anthony Sampson.

The White House faced its biggest crisis over Iraq last week, but its origins lie in practices that may have been routine. We reveal how the abuse of prisoners began long before the sickening images which have outraged the world appeared

Secret email gives advice on denying climate change

Secret Report Warns of Rioting and Nuclear War; Threat to the World is Greater than Terrorism