A Dutch scientist thinks he has discovered a new species of wild pig nearly twice the size of other pigs in Brazil's Amazon region. 

A single gene influences whether breastfeeding improves a child's intelligence, say London researchers. 

New technology that can make tanks invisible has been unveiled by the Ministry of Defence. 

 In secret trials last week, the Army said it had made a vehicle completely disappear and predicted that an invisible tank would be ready for service by 2012.

The new technology uses cameras and projectors to beam images of the surrounding landscape onto a tank. 

Passengers on a German train mistook a Halloween reveller dressed up as a gore-covered zombie for a murder victim and called the police.

The 24-year-old man fell into a drunken slumber on his way home from a Halloween party in Hamburg, police in the northern town of Bad Segeberg said on Monday.

Believing his hands and face were smeared with blood, passengers alerted police after getting no response from him.