The US state department gives federal agencies more time to review the Keystone XL oil pipeline before determining whether to issue a permit.

A leading British naturalist accuses Malta of failing to prevent large-scale illegal shooting of migratory birds by hunters.

Hitachi says it will install a lift capable of reaching speeds of 72km/h (45mph) into a skyscraper in Guangzhou, southern China.

Scientists have outlined how they managed to make the wonder material graphene using a kitchen blender.

A visualisation showing where sizeable asteroids have hit the Earth in recent years has been released by the B612 Foundation.