24 March 2011 Last updated at 10:27 ET

Cuckoos get craftier in eggs 'arms race'Reed warbler's nest with eggs and European cuckoo chick just hatched, UK.

Cuckoos' egg forgery skills are increasingly being put to the test, as host birds evolve better defences, say scientists. Earth News

'Fake Mayan' figure holding shield'Fake' Mayan statue sold for $4m

A Mayan sculpture that fetched 2.9m euros ($4.2m, £2.5m) at a Paris auction is a fake, Mexican officials claim.

Mickey the ferretRail ferret gets London-Edinburgh single ticket

A ferret is rescued from an Edinburgh railway station after apparently getting off a train from London.

Infra-red image of the fossilised skin sample (Image: Royal Society)Secrets of prehistoric reptile skin revealed

For the first time, an image maps organic compounds still surviving in a prehistoric reptile skin sample, offering an insight into how it was preserved.

Half-empty church'Extinction threat' to religion

Decades of census data, alongside a mathematical model, suggest religion in nine secular countries is being driven to extinction.

Knut the polar bear, file image from December 5 2010Star German polar bear Knut dies

Knut the polar bear, who became a celebrity across the world, dies at the age of four, a German zookeeper says.

Summit of Penycloddiau Iron Age hilltop test's 'success'

An experiment is held to identify how Iron Age people may have communicated between their hilltop homes 2,500 years ago.

Rene "El Loco" HiguitaColombia keeper runs for mayor

Former Colombia goalkeeper, Rene "El Loco" Higuita, famous for his erratic exploits and inventing the "scorpion kick", is to stand for political office.

A Colt M1911, from the collection of Charles W ClawsonUtah names official state firearm

Utah has become the first US state to designate an official state firearm - the Browning M1911, a move critics said was divisive.

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