Voices Ice forms on the shore of the East River due to unusually low temperatures caused by a polar vortex in New York

All 50 US states are below freezing as the polar vortex sworls around North America, shattering temperature records and causing a collective shudder across the continent.

Wanted: new chief of staff to run the White House – and get on with Obama

On the cusp of what promises to be a tough re-election year, Barack Obama yesterday confirmed his most senior aide, White House Chief of Staff Bill Daley, is stepping down early after a relatively brief, but often scratchy, 12 month in the post.

Gil Scott-Heron performs in California in 2010

Godfather of rap's last words: Exclusive extract from Gil Scott-Heron’s posthumous memoir

Next month, the visionary poet, rap/hip-hop pioneer, and author Gil Scott-Heron will be honoured with a Special Merit Award at the Grammys. Here is an exclusive extract from his forthcoming memoir, The Last Holiday

'This stuff is marvellous': Chamberlain in his Shelter Island studio last year

John Chamberlain: Sculptor who gave new life to scrap-heap cars

John Chamberlain was a sculptor who experimented with many techniques and materials over his half-century career as an artist. But his signature pieces remain the numerous sculptures made of metal from old cars. With titles such as Glove-Box Collision, Spark Plug Staccato and Fly Wheel Sonata, these colourful and imposing works give a new and enduring life to material from vehicles which have been consigned to the scrap-heap.

Richard Wolffe: Mitt Romney's underwhelming performance does not fully explain Iowa's extraordinary three-way split

You can't blame Mitt Romney. It may be easy to be beastly to the unloved Republican presidential frontrunner. He may well look like "the guy who laid you off," as one former conservative rival quipped. He may well have spent the last four years and as many millions (with the help of anonymous supporters) going nowhere in Iowa: he gained almost exactly the same number of votes yesterday as he did in 2008.

The Obama campaign has not officially begun, but the re-election headquarters in Chicago is buzzing, with 200 workers on board

Inside Obama's Chicago machine

As the Republican primaries get under way, David Usborne is granted exclusive access to the crack team in the President's home town who hope to neutralise the enemy and return their man to the White House

Supertall: the Shanghai World Financial Centre, the world's fourth tallest building at 492m

Skyscrapers: Inside the power of the tower

A meeting of wealth and innovation – the skyscraper is the defining symbol of our age. A new book dissects the workings of our megatowers. Will Dean meets its author

Rappers' snaps hit bum note

An American attempt to smooth relations with Pakistan using hip-hop diplomacy unravelled yesterday when the Pakistani military briefly detained a music group accused of taking photographs of sensitive installations.

Wilco, Roundhouse, London

The masters of reinvention are still inspiring a whole lot of love

Album: Sharon Jones & the Dap-Kings, Soul Time! (Daptone)

Soul Time! is a near-perfect expression of retro-soul style that grips from its opening bars.

'Too thin to conceive' women warned

Being too thin can be just as damaging as being too fat when it comes to getting pregnant, according to new research.

Album: Tom Waits, Bad As Me (Anti-)

On what is inarguably Tom Waits's best album since Rain Dogs a quarter of a century ago, he strolls assuredly across the landscape of American music, turning his hand with equal facility to an extraordinary range of styles, and managing to invent one or two of his own along the way. It must be wonderful to exercise such protean command over one's art, and it's immensely satisfying to witness it wielded by a musician of such remorseless integrity.

Charles Percy: Politician hailed early in his career as the Republicans' answer to John F Kennedy

Today, Charles Percy's moderate politics and his readiness to work across the aisle with Democrats would consign him to the Republican Party's outer darkness. Back in the 1960s and early 1970s, however, those views chimed with the liberal mood of the era, and many thought the young Senator from Illinois was destined for the Oval Office.

Dyson lives up to Ryder billing

Simon Dyson. It was the first name on Paul McGinley's teamsheet and the first out of Ian Poulter's mouth when asked who he expected to graduate from this Seve Trophy to next year's Ryder Cup.

David 'Honeyboy' Edwards: Delta bluesman who played with Muddy Waters and Robert Johnson

David "Honeyboy" Edwards was, almost certainly, the last surviving link with the "Golden Age" of the Delta blues. A friend and associate of many of the genre's seminal figures, including the great Robert Johnson, he was a performer of versatility, integrity and power who continued to hold audiences in his thrall into his tenth decade.

Latest stories from i100
Career Services

Day In a Page

Independent Travel
Pompeii, Capri & the Bay of Naples
Seven Cities of Italy
Burgundy, the River Rhone & Provence
Prague, Budapest and Vienna
Lake Garda
Minoan Crete and Santorini
Prices correct as of 17 April 2015
Not even the 'putrid throat' could stop the Ross Poldark swoon-fest'

Not even the 'putrid throat' could stop the Ross Poldark swoon-fest'

How a costume drama became a Sunday night staple
Miliband promises no stamp duty for first-time buyers as he pushes Tories on housing

Miliband promises no stamp duty for first-time buyers

Labour leader pushes Tories on housing
Aviation history is littered with grand failures - from the the Bristol Brabazon to Concorde - but what went wrong with the SuperJumbo?

Aviation history is littered with grand failures

But what went wrong with the SuperJumbo?
Fear of Putin, Islamists and immigration is giving rise to a new generation of Soviet-style 'iron curtains' right across Europe

Fortress Europe?

Fear of Putin, Islamists and immigration is giving rise to a new generation of 'iron curtains'
Never mind what you're wearing, it's what you're reclining on

Never mind what you're wearing

It's what you're reclining on that matters
General Election 2015: Chuka Umunna on the benefits of immigration, humility – and his leader Ed Miliband

Chuka Umunna: A virus of racism runs through Ukip

The shadow business secretary on the benefits of immigration, humility – and his leader Ed Miliband
Yemen crisis: This exotic war will soon become Europe's problem

Yemen's exotic war will soon affect Europe

Terrorism and boatloads of desperate migrants will be the outcome of the Saudi air campaign, says Patrick Cockburn
Marginal Streets project aims to document voters in the run-up to the General Election

Marginal Streets project documents voters

Independent photographers Joseph Fox and Orlando Gili are uploading two portraits of constituents to their website for each day of the campaign
Game of Thrones: Visit the real-life kingdom of Westeros to see where violent history ends and telly tourism begins

The real-life kingdom of Westeros

Is there something a little uncomfortable about Game of Thrones shooting in Northern Ireland?
How to survive a social-media mauling, by the tough women of Twitter

How to survive a Twitter mauling

Mary Beard, Caroline Criado-Perez, Louise Mensch, Bunny La Roche and Courtney Barrasford reveal how to trounce the trolls
Gallipoli centenary: At dawn, the young remember the young who perished in one of the First World War's bloodiest battles

At dawn, the young remember the young

A century ago, soldiers of the Empire – many no more than boys – spilt on to Gallipoli’s beaches. On this 100th Anzac Day, there are personal, poetic tributes to their sacrifice
Dissent is slowly building against the billions spent on presidential campaigns – even among politicians themselves

Follow the money as never before

Dissent is slowly building against the billions spent on presidential campaigns – even among politicians themselves, reports Rupert Cornwell
Samuel West interview: The actor and director on austerity, unionisation, and not mentioning his famous parents

Samuel West interview

The actor and director on austerity, unionisation, and not mentioning his famous parents
General Election 2015: Imagine if the leading political parties were fashion labels

Imagine if the leading political parties were fashion labels

Fashion editor, Alexander Fury, on what the leaders' appearances tell us about them
Phumzile Mlambo-Ngcuka: Home can be the unsafest place for women

Phumzile Mlambo-Ngcuka: Home can be the unsafest place for women

The architect of the HeForShe movement and head of UN Women on the world's failure to combat domestic violence