Dr Barber points out that there are hurdles to overcome before placing a nuclear reactor on the Moon for humans to use.
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But in the video itself, the signs on Croydon's North End are in English, the cyclist has no balaclava and Caz is giving him the thumbs up after a friendly chat.
"There was a big step – jump – that people have questioned," Jackson says. "But now the world is awash with oil and it's not clear that the same calculations still apply."
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