An orphaned baby chimpanzee whose plight moved people around the world has died.
There are just four breeding pairs of iconic bird of prey the hen harrier left in England.
The UK's favourite yellow submarine completes its first major science expedition in the Antarctic.
Close shaves while working with cheetahs and lions
Why are countries laying claim to the deep sea floor?
Mexican doctor's mission to identify the dead
Predicting the airflow around a supersonic car
How the first accountants counted on cuneiform
How does a female duck become a male?
Programmes, video and downloads: Solutions to air pollution from across the world