News A pedestrian makes their way along a snow packed street in Indianapolis

Much of the United States is currently in the grip of a polar vortex, a system of dense air producing plummeting temperatures and swathes of freezing weather, bringing some parts of the country to a halt and causing chaos in others.

Canada vows to defend Santa Claus from Russian troops as row over territory escalates

Vladimir Putin told a defence ministry meeting that he wished to see the military bolster its presence in the territory

Olympic Sochi 2014 Winter Games torch makes history in first spacewalk

Flight engineers Oleg Kotov and Sergey Ryazanskiy left their base at the International Space Station today carrying the torch

2014 Sochi Olympic torch relay blasts off to space for historic walk

Unlit torch will tour International Space Station before being taken on its first ever trip outside the base

Greenpeace activists hold a banner in front of the Gazprom office in Paris

‘Only drug on Greenpeace ship was medical morphine’: Wives of two men held in Russia claim innocent husbands are being kept in inhumane conditions

The men’s relatives describe the conditions in the prison as worse than the North Pole

Hill and Dale: The lofty view from Errington

Tales from the Trees: Errington Wood, North Yorks - Take to the high ground for a look back over the millennia

Even before you've consulted the car park signs, you just know this hump-backed wood heaves with history. There's something about its location that speaks of ancient concerns: positioning, clear lines of vision, the importance of higher ground. Then, as my wife dons a pack and I lift my son on to my shoulders, we pass information boards that confirm it. Stone Age man quarried here; by the Bronze Age, it had been re-imagined as a resting spot for chieftains. One look around and you understand why.

Ben Saunders, explorer
Parker Liautaud outside the Antarctic chamber, where the temperature is -25C

-25C on the Thames? Young explorer Parker Liautaud lives in pop-up South Pole to prepare for trip

The explorer and climate change campaigner Parker Liautaud puts most other 19-year-olds to shame.

InRealLife gives a perverse account of how digital technologies are changing the lives of teenagers

Establishment figures still fail to portray the Internet in a balanced light

Increasingly unusual weather patterns in recent years have led climate scientists and meteorologists to hold a meeting about concerns over climate change

Stand by for another DECADE of wet summers, say Met Office meteorologists

Climate change may be intensifying the natural cycle and may prolong it, says expert, but it is too early to say

Sterling's silver lining

The chances of incoming Bank of England Governor Mark Carney finding a triple-dip recession in his in-tray this summer could fall on Tuesday as manufacturers attempt to bounce back from a January slump.

Arctic ice-melt will bring frosty relations as nations navigate across North Pole

The loss if sea ice in the Arctic will allow ships to navigate freely across the North Pole by the middle of the century and could lead to unprecedented geo-political tensions between countries that have territorial claims in the region, scientists said.

Builders lighten UK economic gloom

The UK's post-Olympic hangover is likely to be less painful than first feared this week, as the latest figures on the economy's performance at the end of 2012 gives some respite for the Chancellor.

Editorial: We must not talk ourselves into a 'triple dip'

Yesterday's keenly awaited GDP figures allowed the doom-mongers to forecast that the UK was headed for a "triple-dip" recession, if we were not in one already. The Chancellor, at the World Economic Forum in Davos, professed himself disappointed with the news, even as he vowed to press on with Plan A.

MPs attack Government 'hypocrisy' over refusal to ban Arctic drilling

An influential cross-party committee of MPs accused the Government of environmental hypocrisy for refusing to push for a moratorium on drilling for oil and gas in the Arctic.

A cosmic collision: Two satellites due to smash into surface of the moon… but don't worry, it was all planned by Nasa

NASA has deliberately guided the twin satellites into a cliff close to the moon’s northern pole

News
Bryan had a bracelet given to him by his late father stolen during the raid
people
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Vincenzo Nibali of Italy and the Astana Pro Team races to fourth place in the individual time trial
tour de franceas fourth place in time-trial sees him ride to Paris glory on Sunday
Sport
Tour de France competitor Bartosz Huzarski’s legs have highlighted the gruelling nature of the race, after he posted a picture on Facebook showing extremely prominent veins stretching from his feet and all the way up his legs
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A rub on the tummy sprang Casey back to life
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Arts and Entertainment
On set of the Secret Cinema's Back to the Future event
filmBut why were Back to the Future screenings cancelled?
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Susan Sarandon described David Bowie as
peopleSusan Sarandon reveals more on her David Bowie romance
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Lewis Hamilton walks back to the pit lane with his Mercedes burning in the background
Formula 1
Arts and Entertainment
The new characters were announced yesterday at San Diego Comic Con
comic-con 2014
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Arsenal supporters gather for a recent ‘fan party’ in New Jersey
football
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Day In a Page

Burgundy, the River Rhone & Provence – MS Swiss Corona - seven nights from £999pp
Lake Maggiore, Orta and the Matterhorn – seven nights from £899pp
Sicily – seven nights from £939pp
Pompeii, Capri and the Bay of Naples - seven nights from £799pp
Istanbul Ephesus & Troy – six nights from £859pp
Mary Rose – two nights from £319pp
Best comedians: How the professionals go about their funny business, from Sarah Millican to Marcus Brigstocke

Best comedians: How the professionals go about their funny business

For all those wanting to know how stand-ups keep standing, here are some of the best moments
Jokes on Hollywood: 'With comedy film audiences shrinking, it’s time to move on'

Jokes on Hollywood

With comedy film audiences shrinking, it’s time to move on
Edinburgh Fringe 2014: The comedy highlights, from Bridget Christie to Jack Dee

Edinburgh Fringe 2014

The comedy highlights, from Bridget Christie to Jack Dee
Evan Davis: The BBC’s wolf in sheep’s clothing to take over at Newsnight

The BBC’s wolf in sheep’s clothing

What will Evan Davis be like on Newsnight?
Finding the names for America’s shame: What happens to the immigrants crossing the US-Mexico border without documents who never make it past the Arizona desert?

Finding the names for America’s shame

The immigrants crossing the US-Mexico border without documents who never make it past the Arizona desert
Inside a church for Born Again Christians: Speaking to God in a Manchester multiplex

Inside a church for Born Again Christians

As Britain's Anglican church struggles to establish its modern identity, one branch of Christianity is booming
Rihanna, Kim Kardashian and me: How Olivier Rousteing is revitalising the house of Balmain

Olivier Rousteing is revitalising the house of Balmain

Parisian couturier Pierre Balmain made his name dressing the mid-century jet set. Today, Olivier Rousteing – heir to the house Pierre built – is celebrating their 21st-century equivalents. The result? Nothing short of Balmania
Cancer, cardiac arrest, HIV and homelessness - and he's only 39

Incredible survival story of David Tovey

Tovey went from cooking for the Queen to rifling through bins for his supper. His is a startling story of endurance against the odds – and of a social safety net failing at every turn
Backhanders, bribery and abuses of power have soared in China as economy surges

Bribery and abuses of power soar in China

The bribery is fuelled by the surge in China's economy but the rules of corruption are subtle and unspoken, finds Evan Osnos, as he learns the dark arts from a master
Commonwealth Games 2014: Highland terriers stole the show at the opening ceremony

Highland terriers steal the show at opening ceremony

Gillian Orr explores why a dog loved by film stars and presidents is finally having its day
German art world rocked as artists use renowned fat sculpture to distil schnapps

Brewing the fat from artwork angers widow of sculptor

Part of Joseph Beuys' 1982 sculpture 'Fettecke' used to distil schnapps
BBC's The Secret History of Our Streets reveals a fascinating window into Britain's past

BBC takes viewers back down memory lane

The Secret History of Our Streets, which returns with three films looking at Scottish streets, is the inverse of Benefits Street - delivering warmth instead of cynicism
Joe, film review: Nicolas Cage delivers an astonishing performance in low budget drama

Nicolas Cage shines in low-budget drama Joe

Cage plays an ex-con in David Gordon Green's independent drama, which has been adapted from a novel by Larry Brown
How to make your own gourmet ice lollies, granitas, slushy cocktails and frozen yoghurt

Make your own ice lollies and frozen yoghurt

Think outside the cool box for this summer's tempting frozen treats
Ford Fiesta is UK's most popular car of all-time, with sales topping 4.1 million since 1976

Fiesta is UK's most popular car of all-time

Sales have topped 4.1 million since 1976. To celebrate this milestone, four Independent writers recall their Fiestas with pride