Advancing the transition to a sustainable, equitable, and humane global civilization -- a Great Transition -- is the core mission of Tellus Institute. Formed in 1976 as a not-for-profit research and policy organization, Tellus is an international leader in assessing critical environment and development issues.

Earthwatch Institute is an international non-profit organization that brings science to life for people concerned about the Earth's future. We offer volunteers the opportunity to join scientific field research projects all over the world, and help answer critical questions about climate change, biodiversity and sustainability. More than just an ecotour or vacation, Earthwatch volunteers see places and meet people that tourists can't.