Want to grow a planet?

Then tune in ...tonight!

9.00pm BBC2 – How to grow a planet

Ian Stewart explores the plant – grass! On the savannah of south Africa he see how it unleashed a firestorm against its greatest foe, the forests. He also explains how cutting your finger on a blade of grass can explain how grass transformed the oceans, and, standing in the ruins of the oldest temple on earth, he lays bare how grass kick started human civilization.

Claire