Ecomodernism holds out the promise of decoupling human flourishing from environmental impacts through investment in mission-oriented research, development and deployment of an array of breakthrough low emissions technologies that can transform industry, transportion, agriculture and energy systems. It is a movement founded and largely based in the USA which tries to create a big tent and appeals to an all of the above politics. It embraces the roles of private sector entrepreneurs, free markets, civil society and the state in pursuing their goals. I am joined by Jonathan Symons who argues that a real crisis like climate change requires collective agency in the form of state funded democratically controlled intervention. It's how we got a man on the moon, how we developed nuclear energy and how competent nations like Taiwan and Australia are containing the COVID pandemic. The market isn't up to the challenge. To fulfill its promises ecomodernism requires a social democratic politics.