Word: fuel
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Vitousek is currently focusing on the problem of global nitrogen, the element that makes up 80% of the atmosphere. Nitrogen is also found in fossil-fuel exhaust and is a principal ingredient in fertilizer. Spread too much of it around, and it can throw off the planet's biological balance, triggering explosive growth in some species and suffocating others. "That's a huge alteration in how the world works," Vitousek says. "Our capacity to change the earth means we must manage this." For a man who didn't even much care for science at first, that's quite a mission...
...this business," says Paul Lancaster, vice president for finance at Ballard Power Systems in Vancouver, Canada. "They've had a phenomenally rapid development. People overpromised them" before a consumer-compatible technology emerged. Ballard (2000 revenues: $41 million), partly owned by Daimler-Chrysler and Ford, is the leader in automotive fuel-cell development...
...backyard or basement or wherever you care to put a refrigerator-size box that isn't a refrigerator but can keep one cold. They will bring light to America's moonlit homesteads, pollutionless cars to its highways and stealth weed whackers to its suburbs. They are hydrogen-powered fuel cells, coming soon to an industry near...
...when hydrogen and oxygen molecules combine to form water, heat and electricity are produced. Tapping that energy, by binding individual cells into what is known as a "stack," could mean efficient, continuous and clean electricity for everything from long-lasting cell-phone batteries to industrial power generators. And although fuel cells have generated buzz at least since astronauts took a prototype into space on Gemini 5 in 1965, it is only in recent years that a technology suitable for commercially viable hydrogen power has emerged: proton-exchange membrane fuel cells...
...Meanwhile, some independent Russian and foreign experts believe that the explosion resulted from a malfunction in a practice torpedo's engine, propelled with concentrated hydrogen peroxide fuel, or HTP. Accidentally leaked HTP could have come in contact with silver or other metals present in the alloys used in submarine-building, they say, potentially resulting in a powerful explosion. This blast could then have detonated all or some of the Kursk's other torpedoes, causing the second powerful explosion that actually sank the state-of-the art nuclear cruiser a year...