We need to re-imagine and reinvent our underlying systems by radically collaborating at a scale that pushes the boundaries of our imagination. The people we’ve learned from:

• Colleagues, friends, and partners in protecting the ozone layer

  Penelope Canan and Nancy Reichman

• Friends and cofounders of 350.org

  Phil Aroneanu, Will Bates, Kelly Blynn, May Boeve, Jamie Henn, Bill McKibben, Jeremy Osborn, and Jon Warnow

• Friends and cofounders of Malaria No More

  Ray Chambers and Peter Chernin

• Friends and partners in peace and human rights

  Richard Branson and Peter Gabriel

• Doctor, activist, and cofounder of Black Consciousness Movement

  Dr. Mamphela Ramphele

• Friends, Earth System scientists, and cocreators of the Planetary Boundaries

  Katherine Richardson, Johan Rockström, and Will Steffen

• Friends, economists, and scientists, partners in closing the ozone hole

  Sherwood Rowland, Mario Molina, Stephen O. Andersen, and Mostafa Tolba

• Friends, scientists, and partners in discovering the ozone hole

  Joseph Farman, Brian G. Gardiner, and Jonathan Shanklin

• Siblings, humanitarians, and climate change leaders

  Christiana and José María Figueres

• Justice leader forging South Africa’s new democracy

  Justice Albie Sachs

• Spouses and partners in creating the new energy future

  Amory and Judy Lovins

• Spouses and partners in global health and international development

  Gro and Arne Brundtland

• Spouses and partners in peace, freedom, and human rights

  Desmond and Leah Tutu

• Spouses and partners in the collective that eradicated smallpox

  Larry and Girija Brilliant

• Freedom fighter and labor organizer uniting workers as a force for liberation

  Jay Naidoo