Material World - 08/04/2010

As colour returns to gardens across the country after the long cold winter, Quentin Cooper hears how records from two and a half centuries of nature-watching reveal the gradual advance of spring, and what this says about climate change. Also in the programme, the UK team who have built a tsunami simulator to see how buildings can best resist the powerful seawaves created by earthquakes. Nanoelectronics are brought a step closer with a new kind of digital logic. And we hear from more potential participants in Radio 4's "So You Want to be a Scientist" talent search.