At first it seemed expedient to design a special engine for R.100 running on hydrogen and kerosene.

Fuel cells run on hydrogen and emit only water as a byproduct.

The attack runs he'd made had left him rather low on hydrogen to make it all the way across this ridiculously wide stretch of water.

This was the first experimental aircraft in the world operating on liquid hydrogen.

Fuel cells run on hydrogen, which has a low ignition point.

The fuel cell would be powered by natural gas but eventually could run on hydrogen.

A minibus operated on pure hydrogen was demonstrated in 1977.

He called for spending $1.7 billion over five years, with $1.2 billion of that on hydrogen, including production, delivery and storage.

The engines, which provide 150 horsepower at sea level, have been tuned so as to be able to run on hydrogen.

Many universities converted them to run on natural gas, hydrogen, and electric power.