The viability of hydrogen transportation markets: Chicken or egg?

Hydrogen may well be the new gasoline. But where's the nearest "gas" station where you can pull up and refuel your energy-efficient vehicle? Will hydrogen stations be strategically convenient—located on street corners and ...

Outsmarting algae -- Scientist finds the turn-off switch

Algaecide is no crime. Consider that some strains of algae produce toxins lethal to wildlife, fish and plants. Even the less harmful varieties suck oxygen out of water, suffocating living creatures in lakes, ponds, pools ...

Early warning system would predict space storms on Mars

Space weather storms will make living on Mars challenging. The first group of colonists won't need umbrellas; they will need safe houses with 30-foot thick walls made of Martian clay that can withstand radiation storms.

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