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Director / Editor: Victor Teboul, Ph.D.
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Independent and neutral with regard to all political and religious orientations, Tolerance.ca® aims to promote awareness of the major democratic principles on which tolerance is based.

Cheap Pollution Monitor Aims to Help World’s Cities

A new, low-cost tool backed by the United Nations may help developing-world cities control pollution that kills millions each year. A toxic haze shrouds the Nairobi skyline. Buses spew out gray clouds of diesel exhaust at every stoplight. The city’s notorious traffic jams add dangerous gases and particles to the air. The pollution is a direct threat to Tabitha Wangeci’s health. She is dealing with asthma in one of the city’s “informal settlements,” a polite word for slums. With the...


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