Although it might seem a fairly obvious observation, a new study from the University of Iowa has found not only that men, on average, have noses ten per cent larger than womens', they’ve also worked out why this might be.

When life as we know it became possible on Earth

The mystery of how our planet's atmosphere became rich in oxygen has finally been solved

Jeremy Laurance: The ultimate physical challenge

Most lay people know that Mount Everest is the highest in the world. What is less well known is that to reach the summit it is necessary to go up and down it about five times.

Steve Connor: A scientific dream for more than half a century

The ability to make unlimited quantities of red blood cells – which carry vital oxygen around the body – has been a dream of medical researchers for almost half a century. Now that dream is near to reality with developments in embryonic stem cell research.

Freediving: Sport taken to a new extreme

Competitors dive to 50m in freezing waters without oxygen

Mallory: The Everest enigma

Eight decades after his ill-fated expedition, the legend of George Mallory is about to live again – on screen and in a novel by Jeffrey Archer. So will we ever discover whether this dashing, sexually ambiguous, bohemian adventurer reached the top? Ed Douglas meets the myth-makers

Whitbread winner Christopher Nolan dies

Tributes pour in to Irish author who triumphed over disability

Change of air: how rising levels of oxygen transformed life on the land

The solution came from other forms of life that had emerged on land. A few small, worm-like creatures probably emerged from the sea at about the same time as the earliest plants and mosses, about 420 million years ago.

Ready to Wear: My first ever Eve Lom facial

Susannah Frankel: Oxygen facials are said to plump up the skin of both Kate Moss and Madonna

The doctor who dropped his trousers on top of the world

That's how Daniel Martin measured his blood oxygen level – and found a more effective treatment for his patients

Gas blast destroys flats in Ukraine

An explosion ripped through an apartment building in southern Ukraine, killing 19 people. A further 24 people are still unaccounted for, and officials expect the death toll to rise. Twenty-one residents were pulled out alive from the five-storey block in the Black Sea resort of Yevpatoria. The blast, probably caused by canisters of oxygen stored in the basement, flattened all five floors, leaving rubble several metres high strewn with wires, smashed furniture and personal possessions. "As I was walking by, I heard a bang, and then I saw this building crumble," one witness said. Another, who lived opposite the apartment block, said: "We heard a terrible bang. We thought our balcony crashed because of the way the windows vibrated. But when I went on to the balcony I saw smoke from the other side." President Viktor Yushchenko and the Prime Minister, Julia Tymoshenko, set aside their feuding to arrive at the scene together. Mr Yushchenko declared today a national day of mourning. Casualties caused by gas blasts in often crumbling apartment buildings are common occurrences in former Soviet republics, particularly in winter when residents use more heating. Reuters

Final words to her husband: 'Have a safe journey. I will see you some time'

Images of a terminally ill man ending his own life in a Swiss clinic are to be shown on British television for the first time tonight. The scenes were filmed with the patient's consent. His widow has praised the film for breaking the "taboo" that surrounds assisted suicide.

I feel 10 years younger, says father given first 'living lung' transplant

A patient has become the first in Britain to have a life-saving transplant using a technique that doctors hope will increase by 25 per cent the number of lungs available for transplant.

The History Man: The tale of Tom Bourdillon

Tom Bourdillon came within 300ft of immortality as the first man to climb Everest. Now fame beckons thanks to the breathing technology he pioneered, which could transform climbing and medicine, writes Andy McSmith

Simon Calder: Low pressure in the skies leads to high anxiety

Four out of five British travellers say they could walk alone and unaided to the North Pole with nothing more substantial than a chunky-knit jumper and a pocket full of Kendal mint cake. Even by the standards of some of the travel surveys that emerge during the dog days of August, that is tosh. But how about the statistic that was cited in the aftermath of a diverted Ryanair flight this week? "Well over 80 per cent of people on that flight knew they were going to die."

Colombia's James Rodriguez celebrates one of his goals during the FIFA World Cup 2014 round of 16 match between Colombia and Uruguay at the Estadio do Maracana in Rio de Janeiro, Brazil
transfersColombian World Cup star completes £63m move to Spain
Antoine Griezmann has started two of France’s four games so far
Life and Style
techYahoo Japan launches service to delete your files and email your relatives when you die
Life and Style
Child's play: letting young people roam outdoors directly contradicts the current climate
lifeHow much independence should children have?
Arts and Entertainment
Tycoons' text: Warren Buffett and Bill Gates both cite John Brookes' 'Business Adventures' as their favourite book
booksFind out why America's richest men are reading John Brookes
Arts and Entertainment
<p>Troubled actor Robert Downey Jr cements his comeback from drug problems by bagging the lead role in Iron Man. Two further films follow</p>
filmRobert Downey Jr named Hollywood's highest paid actor for second year running
Life and Style
Dale Bolinger arranged to meet the girl via a fetish website
Career Services

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
Some are reformed drug addicts. Some are single mums. All are on benefits. But now these so-called 'scroungers’ are fighting back

The 'scroungers’ fight back

The welfare claimants battling to alter stereotypes
Amazing video shows Nasa 'flame extinguishment experiment' in action

Fireballs in space

Amazing video shows Nasa's 'flame extinguishment experiment' in action
A Bible for billionaires

A Bible for billionaires

Find out why America's richest men are reading John Brookes
Paranoid parenting is on the rise - and our children are suffering because of it

Paranoid parenting is on the rise

And our children are suffering because of it
For sale: Island where the Magna Carta was sealed

Magna Carta Island goes on sale

Yours for a cool £4m
Phone hacking scandal special report: The slide into crime at the 'News of the World'

The hacker's tale: the slide into crime at the 'News of the World'

Glenn Mulcaire was jailed for six months for intercepting phone messages. James Hanning tells his story in a new book. This is an extract
We flinch, but there are degrees of paedophilia

We flinch, but there are degrees of paedophilia

Child abusers are not all the same, yet the idea of treating them differently in relation to the severity of their crimes has somehow become controversial
The truth about conspiracy theories is that some require considering

The truth about conspiracy theories is that some require considering

For instance, did Isis kill the Israeli teenagers to trigger a war, asks Patrick Cockburn
Alistair Carmichael: 'The UK as a whole is greater than the sum of its parts'

Alistair Carmichael: 'The UK as a whole is greater than the sum of its parts'

Meet the man who doesn't want to go down in history as the country's last Scottish Secretary
Legoland Windsor's master model-makers reveal the tricks of their trade (including how to stop the kids wrecking your Eiffel Tower)

Meet the people who play with Lego for a living

They are the master builders: Lego's crack team of model-makers, who have just glued down the last of 650,000 bricks as they recreate Paris in Windsor. Susie Mesure goes behind the scenes
The 20 best days out for the summer holidays: From Spitfires to summer ferry sailings

20 best days out for the summer holidays

From summer ferry sailings in Tyne and Wear and adventure days at Bear Grylls Survival Academy to Spitfires at the Imperial War Museum Duxford and bog-snorkelling at the World Alternative Games...
Open-air theatres: If all the world is a stage, then everyone gets in on the act

All the wood’s a stage

Open-air productions are the cue for better box-office receipts, new audiences, more interesting artistic challenges – and a picnic
Rand Paul is a Republican with an eye on the world

Rupert Cornwell: A Republican with an eye on the world

Rand Paul is laying out his presidential stall by taking on his party's disastrous record on foreign policy
Self-preservation society: Pickles are moving from the side of your plate to become the star dish

Self-preservation society

Pickles are moving from the side of your plate to become the star dish
Generation gap opens a career sinkhole

Britons live ever longer, but still society persists in glorifying youth

We are living longer but considered 'past it' younger, the reshuffle suggests. There may be trouble ahead, says DJ Taylor