Life on earth has gone through a series of mass extinctions. Mike Benton talks about his fascination with ancient life on the planet and his work on the Bristol Dinosaur Project.
Image: Mike Benton BBC Copyright
Mike Benton
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21/12/2010 GMT
Nanoparticles are all around us. What effect could they be having on our environment?
Episode 1
Professor of Acoustic Engineering Trevor Cox talks to musicians and scientists to look at the acoustics of musical instruments.
