Sandra Steingraber is an ecologist, an author and, now, an activist. She writes a regular column for Orion magazine and has written several books, including her latest Raising Elijah which is about how to make sure one’s children navigate a world that is fraught with environmental dangers. She knows about this firsthand from another book she wrote, Living Downstream, which is about her own battle with cancer that was caused by toxins. (The book is also a documentary by the same name). Steingraber has also become a leading voice in the nation-wide battle about natural gas and fracking.

Chuck Kutscher is the principal engineer at the National Renewable Energy Laboratory and a professor at Colorado University, who spoke at the 2007 Moving Mountains Symposium on energy. He focuses on solar power and how this renewable resource could help diminish carbon emissions as the world's energy demands increase.

Last at Mountainfilm in 2009 for the Moving Mountains Symposium on food, Roz Naylor is a Stanford professor whose expertise focuses on food security, the environmental impacts of crops and livestock, and climate change.