E. coli outbreaks, and sniffing the air for DNA

This episode of The Naked Scientists: How scientists are getting to grips with the UK's E. coli outbreak. Lettuce leaves look like the source, but how? Also, how atomic bomb tests have helped us build a better picture of how much carbon plants can lock away - and the news is both good and bad. And, how scientists near Norwich are sniffing the air... for DNA. Like this podcast? Please help us by supporting the Naked Scientists