News An aerial picture of the Grand Canyon in Arizona from around 30,000 feet (10,000m)

It was thought that the global landmark was perhaps 70million years old

Is your summer too much of a damp squib? Then head over to Death Valley

Sweltering conditions hit Arizona and California in a heat wave set to last all weekend.

Don't look down! Nik Wallenda crosses the Grand Canyon on just two inches of steel rope

He is already considering his next death-defying feat in New York

Nik Wallenda will cross the Grand Canyon with cameras rigged to his body

Watch if you dare: Daredevil to attempt high-wire Grand Canyon crossing

Armchair thrill-seekers will be able to watch a high-wire walker cross the Grand Canyon, Arizona without a harness on television late tonight.

Up and away: Holly Bleasdale parted company with her coach Julien Raffalli in highly emotional circumstances

Down-to-earth Holly Bleasdale can scale new heights

Pole vaulter is only 21 in a discipline dominated by thirtysomethings but wants to be the third woman to jump five metres

Temple of the Feathered Serpent at the archaeological site of Teotihuacan

Hundreds of mysterious yellow orbs discovered under Mexico’s Temple of the Feathered Serpent

Archaeologists excavating beneath Mexico’s Temple of the Feathered Serpent have discovered hundreds of mysterious yellow orbs.

Nik Wallenda crossing Niagara Falls on a wire in 2012

Niagara Falls daredevil plans to cross Grand Canyon without a harness

Seventh-generation acrobat says it's "exciting" that there will be no safety precautions in place

Equality activists outraged as Arizona considers banning transgender people from using public toilets not designated for their birth sex

Proposal comes less than a month after the city of Phoenix passed a human rights ordinance prohibiting gender identity discrimination in public accommodations

A photo issued by the National Optical Astronomy Observatory of a planetary nebula Sh2-174 which gives the appearance of a red rose - or maybe a tulip - but is actually the remains of a dying star some 1,000 light years away

Roses are red, one star is blue - even astronomers' romance shines on through

It seems that even astronomers have a romantic side.

Brandt Snedeker

Brandt Snedeker rises into top four

Brandt Snedeker has moved to a career-best fourth in the world after following up back-to-back runners-up finishes with victory at the Pebble Beach Pro-am.

Paul Gascoigne pictured in November last year at a Lazio match

Paul Gascoigne continues to receive hospital treatment in the United States

The former England midfielder travelled to a clinic in Arizona last week

Identical twin brothers held over sex attacks – but which is the suspect?

Identical twin brothers have been arrested by police in Marseille investigating a series of sexual assaults in the past 15 months. But the investigators have no idea which of the two brothers may be guilty, as the victims are unable to tell them apart.

Muhammad Ali's daughter denies rumours boxing legend is close to death

Muhammad Ali's family have denied reports that his health is deteriorating after comments from his brother which claimed he was 'close to death.'

Body of evidence: Macpherson may have to testify in her former adviser’s case against NI

Hacking's model witness: Introducing Elle Macpherson

After a six-year silence, the Australian supermodel heads to the High Court

Part of Google's panorama of the Colorado River

Ever wanted to see the Grand Canyon? No need for a flight, thanks to Google

Tech giant Google has launched a new service offering panoramic views of the most beautiful spots in the Grand Canyon.

Tee break: Rory McIlroy and Tiger Woods chat during the Turkish Airlines World Golf Final at Antalya
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Lake Garda
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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