Whistle blows in Germany for world's first hydrogen train fleet
The trains will initially use hydrogen derived from fossil fuels, but the hope is hydrogen made using renewable energy will become available
Germany on Wednesday will inaugurate a railway line powered entirely by hydrogen, a "world first" and a major step forward for green train transport despite nagging supply challenges.
Europe's enduring reliance on gas from Russia amid massive tensions over the Kremlin's invasion of Ukraine poses major challenges for the development of hydrogen in rail transport.