It’s been hailed as fuel of the future. Hydrogen is clean, flexible and energy efficient. But in practice there are huge hurdles to overcome before widespread adoption can be achieved.

00:00 How hydrogen fuel is generated.
02:04 How hydrogen fuel could be used.
02:46 Why hydrogen fuel hasn't taken off in the past.
03:40 Is hydrogen fuel safe?
04:31 Hydrogen's advantage over batteries.
05:00 How sustainable is hydrogen fuel?
06:13 Why the hype about hydrogen may be different this time.

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