Trump, a climate change denier who has undone every major U.S. regulation aimed at combating climate change, made a brief appearance in the audience of the United Nations Climate Action Summit along with Vice President Mike Pence and Secretary of State Mike Pompeo.
He did not give remarks but he listened to remarks by German Chancellor Angela Merkel and Indian Prime Minister Narendra Modi.
Trump then hosted his scheduled religious freedom event at the U.N.
Over 60 world leaders and CEOs of energy and financial companies are expected to address the U.N.
Climate action conference and announce climate finance measures and transitioning from coal power.
With climate impacts such as extreme weather, thawing permafrost and sea-level rise unfolding much faster than expected, scientists say the urgency of the crisis has intensified since the Paris accord was agreed.
The agreement will enter a crucial implementation phase next year after another round of negotiations in Chile in December.
Pledges made so far under the agreement are nowhere near enough to avert catastrophic warming, scientists say, and last year carbon emissions hit a record high.