Dutch airline KLM has teamed up with British-American startup ZeroAvia to develop a liquid hydrogen-powered turboprop aircraft. The partners aim to conduct a flight demonstration between two yet-to-be-named airports in 2026. ZeroAvia builds hydrogen-electric powertrains that can be retrofitted onto new or existing aircraft. The company has raised over $300mn from the likes of Airbus, Amazon, and British Airways to realise its vision for zero-emission flight.  Hydrogen-electric engines use hydrogen in fuel cells to generate electricity. This then powers electric motors that turn the aircraft’s propellers. The only emission is water vapour. Credit: ZeroAviaZeroAvia has conducted several flights of a…

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