Help raise money to combat the worldwide water crisis by signing up for the Dow Live Earth Run for Water, a series of 6K runs/walks to be held April 18 in nearly 100 cities across 50 countries.

The distance represents how far women and children in some developing countries must walk to access clean water.

Funds will benefit Global Water Challenge, a coalition of nonprofit organizations that bring clean, safe drinking water to millions of people worldwide. Beneficiaries include innovative water reclamation projects in Haiti, Central America, Sub-Saharan Africa and Southeast Asia.

Singers Melissa Etheridge and Rob Thomas will perform at events in Los Angeles and Atlanta, respectively.

“Through the commitment of these artists, we are able to connect with a wider audience on this important issue and ultimately encourage them to participate in this movement to bring clean, safe drinking water to the nearly 1 billion people on this planet in need,” says Live Earth Founder Kevin Wall.

U.S. residents can enter a sweepstakes to win a free trip to the Los Angeles or New York event by setting up a fundraising page or making a direct donation in any amount to Global Water Challenge. On April 9, one winner will be randomly selected to receive free roundtrip airfare for two and a 2-night hotel stay in either Los Angeles or New York, based on closest proximity.

For Your Organic Bookshelf: Blue Covenant: The Global Water Crisis and the Coming Battle for the Right to Water