Populations of marine mammals, birds, fish and reptiles have nearly halved since 1970 due to human activity and climate change, a report says.

The first images acquired by a new UK-built, high-resolution, Earth-observation constellation are released.

Scientists determine that the sub-surface body of water on the Saturnian moon Enceladus must be far more extensive than first thought.

Scientists have been illuminating the vital role played by the Arabian Peninsula in humankind's exodus from Africa.

In a tiny laboratory worm, scientists directly control brain cells using sound waves for the first time.

Intelligent automation now means that a dairy herd can be fed, cared for and milked by just one or two people.

David Shukman looks at how the failures at the Copenhagen climate summit haunt the process six years on.