1.Hydrogen is the lightest, most abundant chemical element in the universe. A full three quarters of its elemental mass is composed of it.
2.Vehicles powered by hydrogen fuel cells emit water vapor and warm air -- no polluting emissions.
2.Vehicles powered by hydrogen fuel cells emit water vapor and warm air -- no polluting emissions.
3.As we noted, hydrogen fuel cells produce electric power while emitting just pure water as exhaust -- so pure that U.S. astronauts drank the water that was produced by fuel cells on the space shuttle.
Liquid hydrogen, meanwhile, is the rocket fuel used to blast satellites and spacecraft into Earth orbit and beyond.
4.Our own life-giving sun is fueled by hydrogen in its core. Every second it converts hundreds of millions of tons of H into helium, generating mind-boggling amounts of energy.
5. Hydrogen car fuel cells pack enough juice that, with the help of adapters manufacturers are developing, could power a home during a power grid outage or other emergency.
6. Hydrogen is freaky lightweight, even lighter than air. If you filled balloons with natural gas, helium, and hydrogen and then set them aloft, the hydrogen balloon would rise at 45 miles per hour -- double the speed of helium and six times faster than natural gas.
7. Hydrogen, a gas, can become a liquid, but it needs to be cold for that to happen. Really, really cold, to the tune of -423 degrees F. For that reason, in large quantities it's usually pressurized and stored as a gas.
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