News Temperatures have plunged to -13C in the town of Hell, Michigan

The extreme weather in the US has got so cold that even Hell has frozen over.

Melting polar ice creates a new challenge for British adventurers

The retreat of sea ice in the Arctic is not just opening up the fabled North-West Passage to shipping. It has made it possible for explorers to row to the North Pole.

Melting of the Arctic 'will accelerate climate change within 20 years'

An irreversible climate "tipping point" could occur within the next 20 years as a result of the release of huge quantities of organic carbon locked away as frozen plant matter in the vast permafrost region of the Arctic, scientists have found.

Rosneft and Shell in talks

Igor Sechin, Russia's top energy official and the head of Russia's largest oil company, Rosneft, has met with Shell's chief executive, Peter Voser, to discuss Arctic exploration projects, the Russian government said yesterday.

David Prosser: The stakes get ever higher for Bob Dudley in Russia

Outlook There are two ways to look at the latest misfortune to befall BP's alliance with Rosneft. One is to say that Bob Dudley, chief executive of BP since the autumn, is making a pig's ear of his first six months in the job. The other is to reflect on where BP might be 10 years from now if, in the end, it can snatch victory from the jaws of defeat in Russia. And for the time being, it's not possible to say which of these alternatives ought to be the prevailing view.

Leading article: The Arctic no place for oil companies

The collapse of BP's deal to explore the Arctic sea for oil is deeply humiliating for the giant oil corporation. It was only in January that BP, with a great fanfare, announced the deal with Rosneft, the Kremlin-backed Russian oil company. The tie-up was supposed to rebuild BP's reputation after the disaster of the Deepwater Horizon explosion in the Gulf of Mexico last year which has cost the company $41bn so far. That much-vaunted strategy is now in tatters.

BP blow as Rosneft deal collapses

BP's hopes of making the Arctic a key part of its recovery plan were dealt a major blow today by the failure of a share swap and exploration deal with Russian oil group Rosneft.

Heather Conley: The risks are high in such a harsh environment

Despite Russia planting a Russian flag on the Arctic seabed in 2007 or countries making very strong statements about sovereignty over their Arctic territory, I think there's a very low probability of nation's rival claims leading to conflict. These countries are expressing their Arctic identities. Yet what the WikiLeaks cables do provide is some insight into why this is a region of growing importance.

BP moves closer to Rosneft deal

Oil giant BP today moved closer to salvaging a proposed tie-up with Russian government-owned Rosneft after appeasing a group of angered shareholders.

Environmental activists occupy Arctic oil rig

Greenpeace activists climbed aboard an oil rig off Turkey today in a bid to prevent it from leaving for Greenland to begin deep-water drilling in the Arctic.

How I Ended This Summer (12A)

Starring: Grigory Dobrygin, Sergei Puskepalis, Igor Chernevich

Album: Underworld, Frankenstein: Music from the Play (www.underworldlive.com)

Underworld's music for Danny Boyle's Frankenstein sounds like Throbbing Gristle doing the soundtrack to The Wicker Man – a fog of industrial noise punctuated by flamenco guitar flourishes and bursts of communal folk-singing.

Arctic coastlines recede by 'several metres' a year

Arctic coastlines are crumbling away and retreating at the rate of two metres or more a year due to the effects of climate change. In some locations, up to 30 metres of the shore has been vanishing every year.

BP fights on for Rosneft deal as TNK talks end

BP secured a last-minute extension to its $10bn (£6bn) tie-up with Rosneft yesterday, as the oil giant faced down environmental protesters and shareholder rebellion at its annual general meeting.

Rosneft may axe BP as partner in the Arctic

BP's controversial $10bn (£8bn) tie-up with Rosneft was teetering on the brink of collapse last night as a deadline to complete the deal appeared likely to pass without agreement.

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Independent Travel
Pompeii, Capri & the Bay of Naples
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Lake Garda, Venice & Verona
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Woman who was sent to three Nazi death camps describes how she escaped the gas chamber

Auschwitz liberation 70th anniversary

Woman sent to three Nazi death camps describes surviving gas chamber
DSK, Dodo the Pimp, and the Carlton Hotel

The inside track on France's trial of the year

Dominique Strauss-Kahn, Dodo the Pimp, and the Carlton Hotel:
As provocative now as they ever were

Sarah Kane season

Why her plays are as provocative now as when they were written
Murder of Japanese hostage has grim echoes of a killing in Iraq 11 years ago

Murder of Japanese hostage has grim echoes of another killing

Japanese mood was against what was seen as irresponsible trips to a vicious war zone
Syria crisis: Celebrities call on David Cameron to take more refugees as one young mother tells of torture by Assad regime

Celebrities call on David Cameron to take more Syrian refugees

One young mother tells of torture by Assad regime
The enemy within: People who hear voices in their heads are being encouraged to talk back – with promising results

The enemy within

People who hear voices in their heads are being encouraged to talk back
'In Auschwitz you got used to anything'

'In Auschwitz you got used to anything'

Survivors of the Nazi concentration camp remember its horror, 70 years on
Autumn/winter menswear 2015: The uniforms that make up modern life come to the fore

Autumn/winter menswear 2015

The uniforms that make up modern life come to the fore
'I'm gay, and plan to fight military homophobia'

'I'm gay, and plan to fight military homophobia'

Army general planning to come out
Iraq invasion 2003: The bloody warnings six wise men gave to Tony Blair as he prepared to launch poorly planned campaign

What the six wise men told Tony Blair

Months before the invasion of Iraq in 2003, experts sought to warn the PM about his plans. Here, four of them recall that day
25 years of The Independent on Sunday: The stories, the writers and the changes over the last quarter of a century

25 years of The Independent on Sunday

The stories, the writers and the changes over the last quarter of a century
Homeless Veterans appeal: 'Really caring is a dangerous emotion in this kind of work'

Homeless Veterans appeal

As head of The Soldiers' Charity, Martin Rutledge has to temper compassion with realism. He tells Chris Green how his Army career prepared him
Wu-Tang Clan and The Sexual Objects offer fans a chance to own the only copies of their latest albums

Smash hit go under the hammer

It's nice to pick up a new record once in a while, but the purchasers of two latest releases can go a step further - by buying the only copy
Geeks who rocked the world: Documentary looks back at origins of the computer-games industry

The geeks who rocked the world

A new documentary looks back at origins of the computer-games industry
Belle & Sebastian interview: Stuart Murdoch reveals how the band is taking a new direction

Belle & Sebastian is taking a new direction

Twenty years ago, Belle & Sebastian was a fey indie band from Glasgow. It still is – except today, as prime mover Stuart Murdoch admits, it has a global cult following, from Hollywood to South Korea