Richard Hollingham investigates the scientific and environmental uses of algae.
Gareth Mitchell asks whether or not desalination is the answer to global water shortages.
Adam Hart-Davis visits the SESAME X-ray project in Jordan.
Andrew Luck-Baker explores the mystery of patches of bright light over areas on the Moon.
How the first forests transformed the planet 380 million years ago.
Sue Broom talks to the food industry who are manipulating foods at the nano scale.
One third of amphibians globally are threatened with extinction. Sue Broom investigates.
Graham Easton reveals why medicines for children lag behind adults.
Andrew Luck-Baker visits the Pacific islands of Palau to witness a mass spawning.
Gabrielle Walker joins scientists to look at the effects of climate change.