Big Ideas for a Small Planet: Water

As population growth collides with droughts and dwindling reserves three volunteers work to create creative solutions to the possible water shortage. Entrepreneur Amanda Brock pioneers a cleaner and more affordable approach to ocean desalination. Tim Pope shows the rainwater harvesting systems he's installed in the San Juan Islands and Chad Pregacke shows off the solar-paneled barge he uses to transport volunteers down the Ohio River to collect and recycle trash.