Although it will not arrive overnight, hydrogen energy has the potential to do good things.

ECONOMIST: Stepping on the gas

He hit on hydrogen sulfide as a potential knockout after watching a television program in 2002 about spelunkers who had to wear respirators when exploring caves filled with the toxic gas.

FORBES: Magazine Article

But hydrogen still has too much potential as an energy medium to shuffle quietly off the scene.

ECONOMIST: Tech.view: Hydrogen tries again | The

Mr Bush may also have been spurred by the fact that potential political rivals are seizing the initiative on hydrogen.

ECONOMIST: Clean energy

Hydrogen sulfide faces skepticism because of its mysterious nature and its potential for toxicity.

FORBES: Magazine Article