An Iodine Chaser
In the capricious world of nuclear waste, a scientist focuses on promising technologies for the capture and storage of the maddeningly elusive iodine-129.
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Solar System
Francisco DeVries invents a financing mechanism that makes rooftop solar affordable in Berkeley and other cities across California.
A History in the Making
Julie Cajune leads a groundbreaking Montana initiative to compile American-Indian history and include it in public education.
The Ecologist and the Prisoners
Professor Nalini Nadkarni enlists a Washington state prison in sustainability research that has turned the prison green — and may help convicts turn their lives around.
The Man Who Bridges Troubled Waters
Aaron Wolf mediates disputes, helping enemies realize that no one deserves to have the water shut off.
Inventing for Peanuts
Jock Brandis invented a low-cost, people-powered peanut sheller that could raise millions out of poverty around the world. Now, if someone would just come up with the money to distribute it.
Clean Start
Joanne Goldblum saw poor people reusing disposable diapers and had to do something. Her nonprofit, The Diaper Bank, now gives 150,000 diapers a month to people in need.
Putting Corporations on the Carbon Scale
Mike Wallace helps climate-savvy investors determine whether companies will prosper or shrivel as carbon dioxide regulation becomes reality.
Slow: Whale Xing
Biologist Christopher Clark builds sonic buoys that help ships avoid running down the last of the right whales.
Making International News
Cristi Hegranes and her nonprofit train women around the world so they can help their communities — through journalism.