The election of Donald Trump as president of the United States already is having a profound effect on U.S. climate policy.

Meet the scientists, economists, engineers, and policy experts who persuaded Trump that man-made global warming is not a crisis, and therefore Barack Obama’s war on fossil fuels must be ended.

The 12th International Conference on Climate Change, taking place on Thursday and Friday, March 23–24 at the Grand Hyatt Hotel in Washington, DC, will feature the courageous men and women who spoke the truth about climate change during the height of the global warming scare. Now, many of them are advising the new administration or joining it in senior positions.

ICCC-12 is hosted by The Heartland Institute, “the world’s most prominent think tank supporting skepticism toward man-made climate change” (The Economist). Since 2008, more than 4,000 people have attended one or more ICCCs.

This year’s ICCC focuses less on the science than previous meetings because climate realists have established beyond reasonable doubt that the human impact on climate is likely to be very small and beneficial rather than harmful. Realists have proven that most scientists now share this opinion, except those who have made careers out of finding a human impact and exaggerating it.

The election of Donald Trump and Republican majorities in the U.S. House and Senate and in state capitals around the country is proof that most American voters, most Republican elected officials, and the president himself do not believe man-made global warming is a crisis.

The task ahead is not to rehash the science yet again, hoping to win over those who will never admit to having been wrong about it. The task now is to explain the benefits of ending Obama’s war on fossil fuels and what policy changes are needed to do this. ICCC-12 will feature in-depth, expert discussions about the economics of energy policy and the benefits and costs of fossil fuels.