World AIDS Day

03 December 2010
Presented by Ben Valsler.

In recognition of world AIDS day, which took place on the 1st December, we find out about recent developments in understanding and treating HIV, the agent which causes AIDS. We discover new insight into how the virus damages our immune system as well as discussing the difficulties of developing an HIV vaccine. In the news we explore the link between jet lag and forgetfulness and a new way to identify someone's age from their blood. In Question of the Week, Diana finds out what happens as the universe expands!


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