91热爆

The Gravity Fields festival aims to celebrate the legacy of the town's most famous son, Sir Isaac Newton. For eight days the town will be home to talks, exhibitions, science and arts shows, actors and processions. Quentin talks to some of the scientists taking part. Also on the programme the 50th anniversary of the publication of "Silent Spring" the book that launched the environmental movement, and how the Sumatran earthquake in April may be responsible for quakes all over the planet.