Transforming costly wastes into valuable resources can make cities highly efficient
A big battle over the Keystone XL pipeline is under way in Washington, D.C. But, it’s mostly fought on terms that don’t matter to the American people
Our future rides on our ability to integrate how we use these three commodities
Changes in agriculture, policy and personal behaviors can reduce the energy a nation uses to feed itself and the greenhouse gases it emits
Water is needed to generate energy. Energy is needed to deliver water. Both resources are limiting the other—and both may be running short. Is there a way out?