Ship-Based Team Profiles Mateo Williford, Solar Specialist and Climber (United States) Previous Index     Mateo began working with Greenpeace in January 2000. He has been part of the activist movement in the U.S. for the past ten years, and has worked extensively as a climb trainer with the Ruckus Society and doing actions with Rainforest Action Network. Mateo has also worked for the past three years installing solar power systems on homes in the US.