unusual to see buses on city streets, but it is unusual to
see buses that arent belching harmful .
A new generation
of buses may be just the ticket to help clean up smog-ridden cities.
Fuel cell-buses run on hydrogen instead of fossil fuels and produce
Cities Use Hydrogen
Successful experiments on the streets of Chicago, Illinois, and
Vancouver, British Columbia (Canada), show how reliable and clean
the buses are. The CTA (Chicago Transit Authority) teamed up with
one of the worlds most respected fuel cell manufacturers,
Ballard Power Systems, to test the buses. The city of Vancouver,
home to Ballard, also ran three buses. The experiments turned out
to be a huge success, with both drivers and passengers appreciating
the cleaner, quieter ride.
Cities Try Hydrogen
Six of the worlds smoggiest cities recently announced plans
to replace some of their traditional buses with hydrogen buses.
The five-year, $60 million program announced by the Global Environment
Facility will provide 46 buses powered by fuel cells for Mexico
City, Sao Paulo, Cairo, New Delhi, Shanghai, and Beijing.
How big an effect will the change make? Studies by the United Nations
Development Program indicate that if all diesel buses in developing
countries were replaced by 2020 with fuel-cell buses operating on
hydrogen produced from natural gas, 440 million tons of carbon dioxide
emissions could be cut each year, and 40 percent of dangerous airborne
particulate matter would be eliminated.