A polar bear breeding project in Scotland takes a step forward with the arrival of a crate for moving a male bear to a female's enclosure.

The legendary abilities of goats and sheep to digest a wide range of inedible materials could help scientists produce cheaper biofuels.

A Bronze Age wheel described as an "unprecedented" find is unearthed at a site dubbed "Britain's Pompeii".

The UN's top climate diplomat, Christiana Figueres, will leave her post in July, having played a key role in the successful Paris climate negotiations.

The El Niño weather phenomenon is set to decline over the next few months but scientists say that a La Niña event could start later this year.