AINonline - Charles Alcock

While much of the discussion about how to reduce aviation’s carbon footprint has focused on the availability of sustainable aviation fuel (SAF) and when and how electric aircraft may be unshackled from the limits of battery technology, hydrogen has been quietly moving up the future propulsion agenda. However, hydrogen has been gaining momentum for some time in other sectors of transportation, such as road, rail, and marine vehicles, and is increasingly being viewed as a viable longer-term alternative to fossil fuel. Some of the more bullish pioneers in the field are claiming they could have hydrogen-powered aircraft approved for service as soon as 2025 or here