🇵🇭Philippines

Grown out of the campaign that won the Philippines' Clean Air Act, this coalition now battles the backyard trash fires that keep filling Filipino neighborhoods with toxic smoke.

Filipino cyclists ranked their own cities and malls on how bike-friendly they actually were, and the mayors started competing for the rating.

A Manila-based network founded in 2001 turns air-quality science into action plans for hundreds of choking Asian cities, from Metro Manila to New Delhi.