Photo by Jiri Rezac/Climate Change Group/Flickr

Persuading people to use energy more efficiently has long been heralded as a simple, effective way to help tackle climate change. The problem lies in the persuasion.

A Busy Saint John Street in the Small Island Nation of Grenada. Photo by Kayla Sawyer/ Flickr

Facing environmental vulnerabilities like increasingly high temperatures, more frequent storm surges and a rising sea level, small island states have long been on the front lines of the fight against climate change.

Green spaces in cities, such as New York’s High Line, promote an active, sustainable lifestyle for city residents. Photo by David Berkowitz/Flickr.

Because buildings in world cities like Mumbai, India (pictured) produce more than 30 percent of global greenhouse gas emissions, improving building efficiency is critical to making cities more sustainable. Photo by Simone D. McCourtie/World Bank.