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Dr Karl answers your science questions including whether you can you eat 14 year old marmalade and if it's possible to drive an F1 car upside down on the roof of a road tunnel.
By BBC Radio 5 Live4.5
107107 ratings
Dr Karl answers your science questions including whether you can you eat 14 year old marmalade and if it's possible to drive an F1 car upside down on the roof of a road tunnel.

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