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Science
LEADING EDGE
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Thursday 21:00-21:30
Leading Edge brings you the latest news from the world of science. Geoff Watts celebrates discoveries as soon as they're being talked about - on the internet, in coffee rooms and bars; often before they're published in journals. And he gets to grips with not just the science, but with the controversies and conversation that surround it.
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LISTEN AGAINListen 30 min
Listen to 26 February
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GEOFF WATTS
Geoff Watts
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Thursday 26 February 2009
A Placoderm
A Placoderm

Larynx transplant
Worldwide only one voicebox or larynx transplant has taken place, but accidents or disease of the larynx means thousands of people in Britain are left having to breath through a hole in the neck with a mechanical sounding voice.

Transplants are now technically possible but the risks and benefits of a laryngeal transplant remain uncertain. Geoff discusses the future of the transplant procedure with medical ethicist Dr Daniel Sokol, and with surgeon Professor Martin Birchall.

First Fish Embryo
Placoderms are a type of fish that went extinct more than 300 million years ago. New work shows that natural selection not only finds solutions to problems, but may come up with the same answer on more than one occasion. The evidence, published in this weeks issue of Nature, comes from a very rare embryo.

Location, location
Whenever you pay with a credit card or withdraw cash from a hole in the wall, you reveal where you were at a particular time. Some people resent the existence of this invisible computerised trail. Others, are untroubled by electronic disclosure of their whereabouts. Bill Thompson is a new technology guru. Where does he stand on the issue of location, location?

Understanding Cruelty
Cruelty is a new book by neuroscientist Kathleen Taylor. She believes that the rapid development of psychology and other brain sciences leads to a better understanding of cruelty.
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