President Trump on Tuesday dismissed the “perennial prophets of doom” on climate change before an audience that included Swedish activist Greta Thunberg at the World Economic Forum in Davos, Switzerland.

But the president said he was a “big believer in the environment” and announced that the US will join the “One Trillion Trees” initiative supported by the forum in an effort to offset carbon emissions.

“We’re committed to conserving the majesty of God’s creation and the natural beauty of our world,” Trump told the world’s top business and political leaders.

He added, to sustained applause, that the US “will continue to show strong leadership in restoring, growing and better managing our trees and our forests.”

But he also lashed out at “alarmists” — the “perennial…