We spend billions on advertising. A program that takes ad dollars and invests them into local renewable energy projects would mean major change if it was implemented widely.

Strict controls and smart re-use means the water that happens on Vegas links stays on Vegas links.

Fact: The United States uses more water in a day than it uses oil in a year. And in four days, the United States uses more water than the world uses oil in a year.

In this installment of "The Big Thirst," the author and Fast Company writer explains why one oft-used statistic about the scarcity of water is misleading.

In the U.S., Canada, and Europe, we don't worry much about diarrhea. But diarrhea is a plague in much of the developing world--deadly and costly.

In this installment, "The Big Thirst" author and Fast Company writer explains how every drop of water you'll ever know, from the spigot to the toilet, is about 4.3 billion years old.

Learning firsthand to save water at home with "Backyard Skills."

Why not treat green grant money more like reality TV? That's irrigation company Rain Bird's $50,000 idea.

An Israeli firm saves H20 by taking to the skies.