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Fuel-Cell Future Less Grey

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It's smog, not fog surrounding six of the world's most air polluted cities: Mexico City, Sao Paulo, Cairo, New Delhi, Shanghai and Beijing. But that could change with the introduction of 46 fuel-cell powered buses that would provide urban transportation and clean the air by cutting down on greenhouse gas emissions.

It's smog, not fog surrounding six of the world's most air polluted cities: Mexico City, Sao Paulo, Cairo, New Delhi, Shanghai and Beijing. But that could change with the introduction of 46 fuel-cell powered buses that would provide urban transportation and clean the air by cutting down on greenhouse gas emissions. The Global Environment Facility announced the five-year, $60-million program on Oct. 1, 2001.

Smog is produced when heat and sunlight react with the pollutants released from gas- and diesel-powered vehicles. Also known as ground-level ozone, smog can inflame breathing passages, which affects the lungs' working capacity, and is especially harmful to children, seniors, asthmatics and people suffering from heart and lung conditions.

A fuel-cell combines hydrogen and oxygen to produce electricity. Fuel-cell vehicles fuelled by hydrogen emit only water vapour, so the buses will help alleviate health risks and protect against global warning.
enn.com Oct. 3, 2001

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