How do hair transplants work?

How is the effectiveness of environmental interventions measured? What's the scientific definition of nothing? Why do farts smell worse in the shower? What happens when an...
21 September 2012
Presented by Chris Smith, Redi Tlhabi

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How is the effectiveness of environmental interventions measured? What's the scientific definition of nothing? Why do farts smell worse in the shower? What happens when an aircraft breaks the sound barrier? What should I drink with lunch? What's happening with ITER? How are flu vaccines made? How do hair transplants work?

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