(This is a video version of the following analysis.)
Trump has been a big critic of the idea of man-made climate change saying he is not a "big believer", even calling it a "hoax" on multiple occasions. This is huge as the whole Agenda 21 program revolves around the idea that the planet's climate is being severely affected by everyday human activity like driving cars or eating meat.
To further show that Trump is serious about putting a stop to the climate change hysteria, he reportedly appointed Myron Ebell to run the EPA transition team. Ebell is a well known skeptic of the theory of man made climate change. He has spoke in favor of Congress prohibiting any funding for the UN Framework Convention on Climate Change, and once labeled the U.N. Intergovernmental Panel on Climate Change an "organized conspiracy dedicated to tricking the world into believing that global warming is a crisis that requires a drastic response."
Even better than that, Trump has shown signs of shunning the UN altogether. At a campaign speech at an AIPAC conference in 2016, Trump criticized the UN for its "weakness", "incompetenece", even saying that the UN is "not a friend of freedom".
While all of this seems promising, we can't start counting our chickens just yet. Trump has a history of flip-flopping. On the global warming issue, Trump and three of his children put their name to an advertisement in the New York Times in 2009 urging President Obama and Congress to take action on climate change. Furthermore, contrary to his recent remarks about the United Nations, Trump testified in front of Congress in 2005 and said that he is a "big fan of the United Nations and what it stands for", though he then goes on to rebuke the United Nations for its incompetence.
Some would brush off Trump's past public positions as nothing more than a business man saying and doing what he has to in order to play the game. While others would say that Trump is an opportunist with no real principles. We are going to have to wait and see.