Former Vice President Al Gore warned in October that electing Trump could “take us toward a climate catastrophe.” And then Gore met with Trump and his daughter Ivanka this week ― a conversation Gore called “extremely interesting” ― raising the prospects that the president-elect might not be as hostile to climate change as he has indicated.

He has since announced Oklahoma Attorney General Scott Pruitt, who has criticized environmental regulations and defended fossil fuel interests, as his pick to head the Environmental Protection Agency.

But people who are concerned about climate change shouldn’t lose hope just because the incoming president is wishy-washy on the issue. “Remember, most of the world is aligned against climate change even if the future occupant of the White House doesn’t want to recognize reality,” Michael Brune, executive director of the Sierra Club, told The Huffington Post.

As 2 degrees Celsius looms ever closer ― the temperature increase scientists say the world must stay below to avoid the worst effects of climate change ― there is a lot that individuals, institutions, cities and states can, and must, do to battle climate change over the next four years.

“As consumers, as investors, in schools, in workplaces, at churches, synagogues or other places of worship, there are lots of positive ways to impact change for the climate,” Brune said. “We’re going to have to give the president-elect the fight of his life.”

Here are some things you and your community can do: