Tomorrow's World

From an explosives-testing range in Wiltshire, this live programme investigates the part that technology such as the latest airport-security systems and a new bombproof bin can play in stopping the impact of terrorism.

A special programme live from Cornwall's Eden Project, the largest greenhouse in the world, which investigates whether fear of heights could be cured through virtual reality. The first woman to receive this pioneering treatment attempts a terrifying abseil off the top of a dome. There is also a report on how psychometric testing could find families the perfect pet. Plus, meet the "lab rats" - the volunteers who surrender themselves to science on screen.