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By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The
Broadcast: February 14, 2003 By George Grow This is the VOA Special English Environment Report. President Bush has offered a plan to speed development of technology that uses hydrogen as fuel. His goa
Amid all the tradition and history of Katmandu, a profound change is in the air. In fact, it might literally clear the air, reducing the choking pollution which has blighted this congested valley. The streets of the capital are gradually being taken
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Common batteries are electrochemical cells. And they may get better thanks to living cells: the multicellular organism called brown algae. Lithium ion
If you could have one superpower, what would it be? 若你能拥有超能力,那会是什么呢? More time. More energy. If the world can put more of both into the hands of the poorest, we believe it will allow millions of dreams to take flight. Ju
This is Scientists American sixty seconds. I am Santy Graver. Got a minute? They are called button cells, coin cells or watch batteries. By any names, this tiny round batteries pose a choking danger to kids. And if a kid succeeds in swallowing a butt