Environment

The Winners of the C40 Cities Awards for Climate Change

The top cities mass-produce compost, use landfill gas to heat a stadium, and “deconstruct” rather than demolish homes.
Mantu Kar, 45, works at a compost-making plant in Uttarpara, near Kolkata.Subrata Biswas/AP

What can you do with an old landfill that’s seeping plumes of climate-baking methane? In Seoul’s case, engineers tapped into the garbage and used its gas to heat offices, homes, and even its World Cup Stadium.

That innovative answer to an environmental problem helped earn Seoul a place among 10 others to win the 2016 C40 Cities Awards at the C40 climate conference in Mexico City. Climate experts and former mayors selected the cities for having sustainability projects that reduce emissions, bolster resiliency, and promote social equity. Now in its third year, the awards give these burgs much-deserved publicity, but no cash (though their efforts provide their own rewards in building the green economy and reducing damages from flooding.)