Summary: This week we have a special show from Perth in Western Australia. Chris Smith finds out whether importing nitrogen fixing legumes could hold the answer to Perth's poor soil fertility and Victoria Gill heads out on a scientific fishing trip to see how Black Bream stocks could give us an insight into the health of estuaries. Plus could gardens hold the answer to preserving the native plants of the Kimberley? In the news, the first measurement of the magnetic field of a black hole, how squid skin could help us hide from infra red cameras and what can David Beckham tell us about playing the piano?
