Negotiators meeting at UN climate talks in Germany say that questions over cash are the biggest barrier to a new global deal.

Alzheimer's disease can be detected decades before onset, using a virtual reality test, a study suggests.

Plague has been a scourge on humanity for far longer than previously thought, samples of ancient DNA show.

Monkeys face an "evolutionary trade off" between a deep, impressive voice and producing lots of sperm, researchers discover.

An image of Kerberos, one of the two tiny moons of Pluto, arrives from Nasa's New Horizons probe.

Warmer temperatures are threatening to shrink the habitat of the snow leopard, the big cat already struggling against extinction, a report says.

Progress towards a deal on climate change at talks in Bonn is proving to be frustratingly elusive, says Matt McGath.

EU aid aimed at curbing the illegal timber trade was poorly managed, say auditors, who are urging better targeting and monitoring.