Why dogs are tameable and wolves aren't

It's long puzzled biologists why dogs have become man's best friend while wolves remain fiercely wild, when genetically the two are so similar.

Ancient flood path triggered Big Freeze

After 30 years of debate, scientists believe they've discovered the trigger for the last great freeze of the Earth, some 12,900 years ago.

Online chat boosts lying, say researchers

People are more likely to lie when communicating electronically, and email generates more fibs than instant messaging.