A cowboy hat-wearing Goldwater conservative named Dave Foreman got religion and then founded the most radical environmental group of recent memory, Earth First! They dreamed of a ‘deep ecology’ that recognized the inherent value of nature, and they committed to protecting that nature at almost any cost. Yet, in putting the earth first, did Dave Foreman relegate humanity to a distant second place?

An Albertan oil man and a socialist policy wonk from Saskatchewan banded together to think up “eco-development,” a precursor to today’s sustainable development. This unlikely duo forged a global consensus at the United Nations, effectively codifying the reigning orthodoxy of liberal environmental governance. They told us that capitalism and sustainability are indeed compatible. Might that be the most utopian of all green dreams?

In the 1970s, Gerard O’Neill drew up detailed plans for large space colonies. The Princeton physicist claimed that these colonies could beam limitless energy back down to Earth, solving all our environmental problems. As climate change accelerates, O’Neill’s once-forgotten green dream has become influential again; many of today’s corporate space evangelists refer to themselves as “Jerry’s Kids.” For solutions to Earth’s problems, should we look to the stars?

Introducing our new season, Green Dreams. Starting September 9, 2025, with weekly episodes through October.