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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Isis profits from destruction of antiquities by selling relics to dealers - and then blowing up the buildings they come from to conceal the evidence of looting

How Isis profits from destruction of antiquities

Robert Fisk on the terrorist group's manipulation of the market to increase the price of artefacts
Labour leadership: Andy Burnham urges Jeremy Corbyn voters to think again in last-minute plea

'If we lose touch we’ll end up with two decades of the Tories'

In an exclusive interview, Andy Burnham urges Jeremy Corbyn voters to think again in last-minute plea
Tunisia fears its Arab Spring could be reversed as the new regime becomes as intolerant of dissent as its predecessor

The Arab Spring reversed

Tunisian protesters fear that a new law will whitewash corrupt businessmen and officials, but they are finding that the new regime is becoming as intolerant of dissent as its predecessor
King Arthur: Legendary figure was real and lived most of his life in Strathclyde, academic claims

Academic claims King Arthur was real - and reveals where he lived

Dr Andrew Breeze says the legendary figure did exist – but was a general, not a king
Who is Oliver Bonas and how has he captured middle-class hearts?

Who is Oliver Bonas?

It's the first high-street store to pay its staff the living wage, and it saw out the recession in style
Earth has 'lost more than half its trees' since humans first started cutting them down

Axe-wielding Man fells half the world’s trees – leaving us just 422 each

However, the number of trees may be eight times higher than previously thought
60 years of Scalextric: Model cars are now stuffed with as much tech as real ones

60 years of Scalextric

Model cars are now stuffed with as much tech as real ones
Theme parks continue to draw in thrill-seekers despite the risks - so why are we so addicted?

Why are we addicted to theme parks?

Now that Banksy has unveiled his own dystopian version, Christopher Beanland considers the ups and downs of our endless quest for amusement
Tourism in Iran: The country will soon be opening up again after years of isolation

Iran is opening up again to tourists

After years of isolation, Iran is reopening its embassies abroad. Soon, there'll be the chance for the adventurous to holiday there
10 best PS4 games

10 best PS4 games

Can’t wait for the new round of blockbusters due out this autumn? We played through last year’s offering
Transfer window: Ten things we learnt

Ten things we learnt from the transfer window

Record-breaking spending shows FFP restraint no longer applies
Migrant crisis: UN official Philippe Douste-Blazy reveals the harrowing sights he encountered among refugees arriving on Lampedusa

‘Can we really just turn away?’

Dead bodies, men drowning, women miscarrying – a senior UN figure on the horrors he has witnessed among migrants arriving on Lampedusa, and urges politicians not to underestimate our caring nature
Nine of Syria and Iraq's 10 world heritage sites are in danger as Isis ravages centuries of history

Nine of Syria and Iraq's 10 world heritage sites are in danger...

... and not just because of Isis vandalism
Girl on a Plane: An exclusive extract of the novelisation inspired by the 1970 Palestinian fighters hijack

Girl on a Plane

An exclusive extract of the novelisation inspired by the 1970 Palestinian fighters hijack
Why Frederick Forsyth's spying days could spell disaster for today's journalists

Why Frederick Forsyth's spying days could spell disaster for today's journalists

The author of 'The Day of the Jackal' has revealed he spied for MI6 while a foreign correspondent