Are hydrogen trains the future of travel?
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Are hydrogen trains the future of UK travel?

Trains powered by hydrogen could be a reality in the UK by the "early 2020s", according to Transport Secretary Chris Grayling.

They're seen as a cleaner - but pricier - alternative to diesel trains, as the exhaust emission is pure water.

The BBC's Roger Harrabin reports from Germany, where hydrogen trains are already running.

  • 29 Oct 2018
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