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

Science: Technoquest Interplantary debris/ Crocodile armour/ Volcanoes/ Hiccups

Questions for this column may be submitted by e-mail to sci.net@campus.bt.com

Where I'll be in 2028, when asteroid XF11 hits our planet

There are so many ways to prepare to meet our doom, but one scares me more than all the others ...

That was close: Earth dodges death by just 600,000 miles...

For a few hours yesterday it looked as thought that 30-year mortgage might not have been such a smart buy after all, writes Charles Arthur, Science Editor. It was announced that an asteroid a mile wide was whirling towards the Earth, and there was a real chance that unless we took some avoiding action, it would hit us and wipe out civilisation.

Science: A home from home

Nasa wants to establish a Moon base. But what would it be like to live there?

Cook sees Montserrat's agony for himself

Defying volcanic ash clouds that forced his staff to don surgical- style nose masks, the Foreign Secretary, Robin Cook, toured the Caribbean island of Montserrat on Saturday to see the plight of its residents.

Science: Big days on little planets: visitors from Earth call in

David Whitehouse on voyages to asteroids, the Solar System's fossils

Letter: Unseen asteroids

Unseen asteroids

Science: Asteroids' tidal wave threat

The impact of a wayward asteroid on one of the earth's oceans would spell disaster for coastal cities, a US scientist says. Such an impact would trigger massive tidal waves, or "tsunamis" capable of travelling thousands of kilometres and devastating entire coastlines - though Britain, it seems, would be spared the worst effects.

Letter: Cold meteorites

Sir: Charles Arthur ("Search for Greenland's thunderbolt", 16 December) perpetuates a popular misconception when he states that "On landing [a meteorite] would be incredibly hot, and melt its way through the icecap". Meteorites are cold when they land. Hence they preserve a record of their history in space.

Radar hunt for meteorite

Danish aircrews are planning to search for the meteorite which fell last week on the southern tip of Greenland by using ground-penetrating radar. New estimates suggest that the meteorite, which streaked across the dawn sky on 9 December, could weigh 50 tonnes or more.

Search for Greenland's thunderbolt

A dense meteorite crashed into the southern tip of Greenland last week. The hunt for it goes on, but it would take someone with Miss Smilla's feeling for snow to find it. This, however, is real life. Charles Arthur, Science Editor, investigates another narrow escape.

Letter: Space invaders

Sir: The threat to Earth from a devastating asteroid impact has somehow been both overestimated and underestimated in Charles Arthur's article about the Chicxulub crater ("Asteroid that killed dinosaurs will strike again - in 35 million years", 4 December).

Science: Asteroid that killed dinosaurs will strike again - in 35 million years

The asteroid impact that wiped out the dinosaurs 65 million years ago was caused by a comparatively small meteor of the size which could be expected to hit the Earth once every hundred million years, according to British scientists.

Books: Derail this stage-struck express

Michael Arditti argues that it's time to bring down the curtain on the cult of Stephen Daldry

Boxing: Oliver is back for more

Spencer Oliver hopes to go one better than Naseem Hamed and stop Italy's Vincenzo Belcastro when they meet for the Londoner's European super-bantamweight title at Alexandra Palace tonight. Belcastro, now 36, lost the European bantamweight title to Hamed in Sheffield in May 1994, surviving two knockdowns but still losing by a landslide.
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Independent Travel
Burgundy, the River Rhone & Provence – Five-star MS Swiss Corona 7 nights from £999pp
Lake Como St Moritz & the Bernina Express 7 nights from £809pp
Vietnam
Lake Maggiore, Orta & the Matterhorn 7 nights from £939pp
South Africa
Spain
Prices correct as of 19 December 2014
The week Hollywood got scared and had to grow up a bit

The week Hollywood got scared and had to grow up a bit

Sony suffered a chorus of disapproval after it withdrew 'The Interview', but it's not too late for it to take a stand, says Joan Smith
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Panto dames: before and after

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Thirties murder mystery novel is surprise runaway Christmas hit

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A Kew Gardens botanist has found 25 new large tree species - and he's sure there are more out there
The 12 ways of Christmas: Spare a thought for those who will be working to keep others safe during the festive season

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We speak to a dozen people who will be working to keep others safe, happy and healthy over the holidays
Birdwatching men have a lot in common with their feathered friends, new study shows

The male exhibits strange behaviour

A new study shows that birdwatching men have a lot in common with their feathered friends...
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Famous diaries: Christmas week in history

Noël Coward parties into the night, Alan Clark bemoans the cost of servants, Evelyn Waugh ponders his drinking…
From noble to narky, the fall of the open letter

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The great tradition of St Paul and Zola reached its nadir with a hungry worker's rant to Russell Brand, says DJ Taylor
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A Christmas ghost story by Alison Moore

The story was published earlier this month in 'Poor Souls' Light: Seven Curious Tales'
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Bill Granger recipes: Our chef creates an Italian-inspired fish feast for Christmas Eve

Bill Granger's Christmas Eve fish feast

Bill's Italian friends introduced him to the Roman Catholic custom of a lavish fish supper on Christmas Eve. Here, he gives the tradition his own spin…
Liverpool vs Arsenal: Brendan Rodgers is fighting for his reputation

Rodgers fights for his reputation

Liverpool manager tries to stay on his feet despite waves of criticism
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Amir Khan attacks the Taliban

'They can threaten me but I must speak out... innocent kids, killed over nothing. It’s sick in the mind'
Michael Calvin: Sepp Blatter is my man of the year in sport. Bring on 2015, quick

Michael Calvin's Last Word

Sepp Blatter is my man of the year in sport. Bring on 2015, quick