Emissions from cars, trucks, buses and other vehicles in the booming cities of Asia, Africa and Latin America account for a rapidly growing component of heat-trapping gases linked to global warming.

We may take the same bus, in front of you, I'm behind, we only a difference of five minutes, I don't want to be with you in the same city, common at the sunrise, sunset, breathe the same air.

Millions of New Yorkers trudge to work in another bone-chilling commute as (the) transit strike enters its second day , leaving the city without subways and buses.