31min - Investigating the 2010 Gulf of Mexico oil disaster; Liz takes part in wildlife rescue efforts.
34min - Liz investigates sunburns; making museum visitors act younger and smarter.
31min - Avoiding jetlag; a demonstration of the size of the solar system; square-wheeled motorbike.
29min - The origins of weather; seasons allow life to form; Jem checks out wave power in Scotland.
31min - Liz visits the volcano that stopped air travel in 2010; predicting probabilities in Las Vegas.
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