Concrete, which is energy and emissions intensive, took over the world around 200 years ago. Emily Majewski thinks it's time for its reign to end. Experimenting in her backyard in Mexico, she created a new, environmentally-friendly building material made from biochar called Cast Carbon.

Oliver Ogden has set out to tell stories. His medium was through film and photography. That is until he found that stories about sustainability, resilience, and stewardship were being told in different ways. He became enamored with natural building and is now founder of Placecraft Design & Build.

Paula Baker-Laporte is an author, architect, and visionary. She has been named one of the top 10 green architects in the US and is a principal at EcoNest Architecture.