Pilot projects that use innovative data collection to encourage recycling and responsible waste management are underway in Argentina, India and the U.S.

Telecommuting can save energy and reduce emissions — unless it doesn’t. A new tool can help companies measure workplace carbon emissions, and figure out if going remote is easier on the planet.  

By adding trees and taming traffic on the Champs Elysées, Paris Mayor Anne Hidalgo promises a car-free makeover for the French capital’s iconic boulevard. 

A new study quantifies what big buildings are doing to the ground beneath San Francisco and other cities, as sea levels rise.