It seems to be the doomed plot of every disaster movie in space, but it's so much more than that: today, we're off searching for the fuel of the future.

Sarah and Luke discover that space mining represents a real opportunity to not only improve but potentially even save life on Earth. Joining us on our search this week is former NASA astronaut Ed Lu and Dr Timi Aganaba, an expert in the politics of space.

Which inventions should we look into next? Let us know on Twitter @SarahCruddas @lukeaaronmoore @StakPod

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