BBC World Service - Discovery

Cassini-Huygens - visiting Titan

The Cassini-Huygens spacecraft has been orbiting Saturn for the past six months

A look at the potential of ionic liquids

A report on the progress of one of the most ambitious interplanetary probes of our time

Exploring the exploits of the explorer and naturalist, William Beebe

Inflammation is our body's defence against infection, but how can it be controlled?

Experts discuss and agree on how an influenza pandemic is imminent

Journalist Hassan Arouni presents a special World Aids day programme from Malawi

How working against the body's natural body clock can cause problems

Humans, animals, plants, even bacteria run their lives according to the passing of the day

The origins of the moon - and how essential it has been to the evolution of life