A major focus is the use of hydrogen as an energy source.

We're spending about $1.2 billion over five years to research the use of hydrogen to power vehicles.

The next step must be technology for the large-scale use of hydrogen.

Although 19,000 cubic feet of hydrogen may sound like a lot, it really isn't.

To increase the production of hydrogen, several tracks are being followed by the researchers.

If so, why is helium 4 times the weight of hydrogen.

The air was fresh and neutral, with plenty of free hydrogen.

I understand that a sun can be a huge ball of burning hydrogen, yet have a spirit.

There would be a shortage of hydrogen in the universe.

The price of Hydrogen has since come down to $4-6/kg.