Word: fuel
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...Nothing new about that Kamen has invented lots of things, but he didn't invent distillation. The trick is to do it using as little energy as possible. However, 1,000 watts of heat won't boil much water, so Kamen developed a closed system, powered by whatever fuel is at hand, that traps the energy released when the boiled water vapor recondenses. Essentially, he's recycling heat. Result: a low-power, low-maintenance device that will cost around $1,000 to manufacture and makes 10 gal. of drinkable water an hour...
...great blackout of August 2003, millions of Americans learned two important lessons: that it is possible to spend an entire evening at home without watching TV and that we should all have backup batteries for our cell phones. For those who need a better contingency plan, this portable fuel-cell generator provides a kilowatt of continuous power for eight hours on a single tank of environmentally correct hydrogen. The AirGen is a tad bulky (about the size of a mini-fridge), but you can roll it under a desk. Unlike a gas-powered generator, it emits only water vapor...
Just about everybody agrees that we would be better off using hydrogen instead of gas for fuel. For starters, hydrogen makes water vapor instead of carbon monoxide when it's burned. But building a safe, efficient hydrogen vehicle is another matter. Enter the Aqwon, the first hydrogen-powered scooter to meet Germany's stringent regulatory standards. The Aqwon can hit 30 m.p.h. with its two-stroke engine, but the biggest challenge was building a fuel tank that could safely store the hydrogen. In case of accident or fire, the Aqwon's tank simply freezes. If only the Hindenburg...
...developing weapons of mass destruction, I see no alternative to international inspectors. The lesson of Iraq is that we should be very cautious about jumping to conclusions. What other tools do you need? I don't believe we should allow national control over the sensitive part of the [nuclear] fuel cycle. We need to 'multilaterize' the enrichment of uranium. We also need more countries to sign the additional protocol [allowing tougher inspections]. And we need to address why countries see the nuclear option as so attractive. That is the most difficult. North Korea [for example] is absolutely craving security assurance...
...keeping a stranglehold on Palestinian towns to curtail attacks by Palestinian radicals. Yaalon told columnists from three newspapers that the Israeli government's "tactical decisions" were at odds with its "strategic interests." Military officials say Yaalon fears current policies will exacerbate the humanitarian crisis in the Palestinian territories, fuel popular rage and so provoke more attacks on his soldiers. Yaalon blames Sharon's hard-line policies for contributing to the downfall of Mahmoud Abbas, who became the Palestinian Prime Minister in April, and offered hope for the peace talks, but resigned four months later...