Scientists say that Comet Hartley 2 contains water like that found in our oceans, challenging the notion that Earth's water did not come from comet impacts.

Impressive leaps performed by some species of fish give an insight into how aquatic animals "invaded" the land, say scientists.

A form of cloning has been used to create personalised embryonic stem cells in humans.

Many people now rely on their smartphones, sat-navs or other GPS devices to find their way around. But is there a more natural way to navigate?

The future of thought-controlled prosthetics receives a boost as monkeys both control and receive tactile feedback from a virtual arm.

The cost of managing an invasive species of deer if it was to arrive in Scotland could cost up to £1.9m a year, says report.

After a study to determine how to spot them, rainbow hunters capure the first-ever images of "tertiary" and "quaternary" rainbows - a full quartet of colours.

Plans to include any airline landing or taking off on EU territory in an emissions trading scheme are legal, an adviser to Europe's top court has said.