Donald Trump once advocated for climate action. Now, he’s moving Barack Obama’s efforts in the opposite direction. Obama’s former science advisor, John Holdren, talks about the damage being done by today’s White House.

For twenty years, Jerry Taylor ran the energy and climate programs for conservative organizations funded by the Koch brothers, before coming around on climate change. He recounts his journey, going from a climate denier to a climate mainstreamer.

Well I think the biggest damage that the Trump administration is doing is first of all reducing or proposing to reduce very drastically investments in clean and efficient energy research and development by the government.  In this country for a very long time we’ve had a symbiosis between government investments in basic and early-stage applied research and the private sector picking up the best ideas and taking them to scale. -John Holdren, Former science advisor to President Obama; Professor of Environmental Policy at the Kennedy School of Government

Read the full article about climate politics from Climate One