Scientists have discovered a key substance in the central nervous-system responsible for transmitting the sensation of an itch from the skin to the brain

Don't scratch the itch: Scientists find substance that could be key to stopping the sensation

Researchers found that removing natriuretic polypeptide b causes an itch to disappear

Steve Wilhite, inventor of the GIF file, poses with an award backstage at the Webby Awards. He says the file should be pronounced 'jif' not 'gif' with a hard 'G'.

GIF inventor Steve Wilhite says it should be pronounced 'jif'

The inventor of the Gif file has revealed that the world has been mispronouncing his creation.

Single ticket scoops $590m jackpot in Florida lottery

A single ticket in Florida has matched all the numbers to win the highest Powerball lottery jackpot in history at an estimated 590.5 million dollars (£389.2m), officials said today.

'A massive and unprecedented intrusion': Associated Press condemns US government for seizing journalists' telephone records without explanation

The Associated Press news agency has condemned the US government for the unexplained seizure of records of telephone calls made by its journalists.

No more fun and games in 'special relationship' as domestic woes dominate David Cameron's visit to Washington

When the British Prime Minister dropped in a year ago, Barack Obama threw him a party and took him to a basketball game.

South Korean President sacks spokesman for 'unsavoury' act during trip to Washington

The sacking of the spokesman, Yoon Chang-jung, 56, was announced after he broke off from the presidential delegation and returned home earlier this week

Prince Harry and first lady Michelle Obama meet at the White House

Michelle Obama pays tribute to Prince Harry as he begins tour of United States

Seven-day visit is the Prince's first to America since he caused outrage by being photographed naked during a weekend break in Las Vegas last year

North Korea moves missiles away from coastal launch site, say US officials

Musudan missiles believed to now be in non-operational location

The historic home of the Lakota Indians

The new battle for Wounded Knee: Sale of massacre site divides tribe

As a patch of their native land is offered for £2.5m, the Lakota people have been left split by what to do

A man cries at a site hit by what activists said was a Scud missile in Aleppo's Ard al-Hamra neighbourhood, in this 23 February 2013 file photo. The United States believes with varying degrees of confidence that Syria's regime has used chemical weapons on a small scale, the White House said on Thursday

David Cameron says evidence 'growing' that chemical weapons used in Syria

But PM said it was unlikely it would lead to British troops on the ground

US Secretary of Defense Chuck Hagel speaks with reporters after reading a statement on chemical weapon use in Syria

John Kerry says Assad's Syria regime HAS used sarin chemical weapons against rebels - despite Barack Obama insisting that was a 'red line' for US

Chuck Hagel and John Kerry reveal nerve gas has been used – but they will not invade for now

The new artwork by Shepard Fairey, attacking the anti-gun control lobby in America

Barack Obama poster artist Shepard Fairey joins gun control march in Washington

Famous for 'Hope' and 'Change' posters from the 2008 presidential election, Fairey says 'I’m not anti- 2nd Amendment, I’m pro-common sense'

For Farea Al-Muslimi, ‘the American’, the campaign against drones has barely begun

Farea Al-Muslimi stole the show when he appeared at a hearing in Washington this week on the fall-out from American drone strikes. But while he has welcomed the attention, he conceded that his campaign to force a re-examination of the use of unmanned aircraft has barely begun.

The News Matrix: Wednesday 24 April 2013

Kerry: prepare for chemical attacks

Eric Justin Toth being arrested in Nicaragua

Teacher Eric Justin Toth, who replaced Osama bin Laden on FBI Ten Most Wanted list over child pornography discovered on a school-owned camera, is arrested in Nicaragua

A former teacher who took Osama bin Laden’s place on the FBI’s Ten Most Wanted list over his alleged links to child pornography has been arrested in Nicaragua.

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Refugee children let down by Washington's high ideals

Democrats and Republicans refuse to set aside their differences to cope with the influx of desperate Central Americas, says Rupert Cornwell
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Matthew Barzun: America's diplomatic dude

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Meet the Quantified Selfers: From heart rates to happiness, there is little this fast-growing, self-tracking community won't monitor

Meet the 'Quantified Selfers'

From heart rates to happiness, there is little this fast-growing, self-tracking community won't monitor
Madani Younis: Five-star reviews are just the opening act for British theatre's first non-white artistic director

Five-star reviews are just the opening act for British theatre's first non-white artistic director

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Mrs Brown and her boys: are they having a laugh?

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Gavin Maxwell's bitter legacy: Was the otter man the wildlife champion he appeared to be?

Otter man Gavin Maxwell's bitter legacy

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Joanna Rowsell: 'I wear my wig to look normal'

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Anyone but Argentina – why Brazilians don’t love their neighbours any more

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