World Water Day 2010: Three Projects That Are Changing the Future

In the developing world, a billion people go without clean water. Across the developed world, storms and failing infrastructure threaten to contaminate water supplies. Is there any hope to be found?

March 22 is World Water Day, so let's talk water.

The United Nations has been observing World Water Day since 1994, and it's hard to exaggerate just how critical this subject is to global sustainability. Everything we think about regarding sustainability--from energy to agriculture to...