Henry Romero/Reuters

4 Major Cities Agree to Ban Diesel Vehicles

They hope to reduce the roughly 3 million yearly deaths tied to outdoor air pollution.

Subrata Biswas/AP

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.

Henry Romero/Reuters

Mayors Set a Tight Deadline to Initiate Climate Action

The next four years will decide if the world can deliver on the Paris agreement, and cities are tasked with an ambitious call to jumpstart the effort.

Paul Sakuma/AP

30 Years of Oil and Gas Pipeline Accidents, Mapped

The sheer number of incidents involving America’s fossil fuel infrastructure suggests environmental concerns should go beyond Standing Rock.

City of Carmel

All Hail Carmel, Indiana, America's King of Roundabouts

The city recently celebrated its 100th traffic circle, and has more than 30 others planned.


Expect More Superstorms Like Sandy, Warn Scientists

Damaging storms in the U.S. Northeast are likely to become “more frequent and more powerful.”

Stacy Spensley/Flickr

What Thanksgiving Costs the Climate Where You Live

How much CO2 did it take to cook a turkey dinner in your state?

Lucas Jackson/Reuters

How Cities Plan to Fight Climate Change in the Trump Years

Local leaders learned how to take action when Washington couldn’t. Now they’re betting those efforts can survive an age of science-denying federal overlords.

Khalid Naji-Allah/D.C. Mayor's Office

Paris, D.C. Mayors Vow to Make City Voices Louder Than Trump's

Anne Hidalgo and Muriel Bowser discuss the challenge ahead as women leaders tackling global warming in a hostile political climate.

Reuters/Mark Kauzlarich

How Much Damage Could Trump Do to U.S. Climate Policy?

Probably not as much as you might think, experts say.


Snow in the U.S. Hits an 'All-Time Low'

There’s scarcely any powder in the Lower 48 outside of the high mountains.

Heino Kalis/Reuters

2016 Set to Beat All Other Years for Record Warmth

In the northern latitudes, temperatures have been more than 12 degrees above average.

Shannon Stapleton/Reuters

How the 'Forgotten Class' Rewrote 2016: Best #Cityreads of the Week

A roundup of the best stories on cities and urbanism we’ve come across in the last seven days.


When Reducing Global Ozone Pollution, Place Matters Most

Greenhouse gases emitted in cities near the equator have the biggest impact on ozone levels worldwide, a new study suggests.


The Hottest Year We've Experienced Could Be Normal by 2025

A massive global heat increase is already locked in, say scientists.

Watch the Grim, Ongoing Loss of the Arctic's Historical Ice

The Arctic had 1.2 million square miles of old ice in the 1980s. Today it has just 68,350.

Christina Tobitsch

The Case for Citizen Science on Coastal Waters

Classroom initiatives in New York and Miami prepare students for a changing world—and they’re good for the environment, too.

W.L. Huber/USGS

Oil Drilling Likely Triggered Some of SoCal's Early 20th-Century Earthquakes

Scientists have linked oil and gas exploration to several L.A.-area quakes, including one that led to the passage of earthquake-resistant building codes.

Robert Galbraith/Reuters

Take a Smell Tour of San Francisco's Presidio Park

This weekend, sensory explorers can huff the park’s trees, dirt, “yeast,” and “wet cement.”