Scientists agree that over the last century the Earth has become warmer. But do we really know why this has happened?

A deftly written and enjoyable read. The Chilling Stars outlines a brilliant daring and undoubtedly controversial new theory that will provoke fresh thinking about global warming.

As prize-winning science writer Nigel Calder and climate physicist Henrik Svensmark explain, an interplay of the clouds, the Sun and cosmic rays - sub-atomic particles from exploded stars - seems to have more effect in the climate than man-made carbon dioxide.