This is a presidential appointment and the senate needs to approve it. Let your senator know how you feel about it. Also, let president Elect Trump know about your feelings and he might even back down on the selection. If anything is important this is. What the US does in this area influences what the rest of the world does. Also we, as a nation, are a chief producer of green house gasses.

We are suppose to be the smart ones, the doers, the dreamers. Prove it! DO SOMETHING to change the world.

The head of the EPA is subject to Senate confirmation [1], so you could start with your senators. You could also contribute to organizations likely to lobby on climate change.

I think it's also worth looking at your own personal standing in society. E.g., many business owners are starting to recognize the economic costs of climate change, and they can talk to various business associations. People interested in national security also see climate change as a potential threat (due to disruption of large populations and increased competition for access to resources like water and arable land). I know some veterans have been speaking out on this. Climate change will have very broad effects, so many can speak out about what it means to them.

[1] https://en.wikipedia.org/wiki/List_of_positions_filled_by_pr...

Along with contacting Senators, there is also a Whitehouse petition.[0]

0: https://petitions.whitehouse.gov/petition/do-not-allow-myron...