Environment - S1.E4 - Brave New World with Stephen Hawking
Jim Al-Khalili looks at how the world's largest laser could help answer global fuel needs. David Attenborough helps to collect the DNA of an elephant for a project that aims to save all the planet's endangered species from extinction. Mark Evans discovers how to grow pork in a Petri dish.
Environment - S1.E4 - Brave New World with Stephen Hawking
November 7, 2011
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