sentences:  The organization associated the high rates of asthma in Northern Manhattan with concentrated levels of particulate matter (PM), an air pollutant released during diesel fuel combustion, emanating from the bus depots, major transportation routes, and heavy traffic throughout West Harlem.WE ACT also organized a media campaign, "The Clean Fuel--Clean Air--Good Health Diesel Bus Campaign", to raise public awareness on the risks associated with diesel exhaust and its ability to trigger asthma attacks.While it failed to influence the MTA to change its policies in favor of cleaner fuel alternatives, the campaign garnered a large amount of public support and attention, demonstrating the power of public media and community outreach.