"They were Audubon members, Nature Conservancy members. But they were conservative, and I grew up not thinking that the environment should be political at all," said Backer.
Yet these days, environmental politics dominates his life. From now until the November election, Backer is driving an electric car across the country, talking about his group's climate agenda and posting videos along the way.
Backer is promoting his group's American Climate Contract, which is a conservative, market-focused response to the Green New Deal.
He's critical of fellow conservatives who ignore climate change. He praised Swedish climate activist Greta Thunberg when they both testified before Congress last year. And Backer says he wants to work with liberal climate activists to pass legislation.
So, how will he vote in November?
"If President Trump wants to get my vote, he's going to have to prioritize climate change in a way that he has not done over the past four years," Backer said.
While he's undecided so far, Backer says he was disappointed climate change wasn't even discussed at the Republican National Convention.
In a statement to NPR the Trump campaign said, "President Trump's record on the environment proves you can have energy independence and a clean, healthy environment without destroying the economy, overregulating, or burdening American taxpayers." The statement never mentions climate change.
"Young Republicans are light years ahead of their elder counterparts on this issue," said Kiera O'Brien, founder and president of Young Conservatives for Carbon Dividends, which supports a carbon tax proposal to reduce greenhouse gas emissions.
O'Brien grew up in Alaska and says young conservatives are motivated by mounting evidence that the climate is changing.
"They're seeing the impacts firsthand, whether it's myself in Alaska with algal blooms that are turning the ocean weird colors, or with flooding in the Gulf Coast, or hurricanes that are unprecedented at this point," O'Brien said. She calls her generation "the climate generation," and says effects they were told were far off are happening now.
Some liberal climate activists are encouraged to see young conservatives join them.
"It means a real hope for the future because it speaks to our generationally shared values: truth, empathy, and patriotism," said Nikayla Jefferson, with the Sunrise Movement. "Climate change knows no party lines."
Former South Carolina Republican Congressman Bob Inglis says young conservative climate activists are being faithful to their age cohort.
"I think it's that they, along with their progressive friends, plan on living on the Earth longer than, say, their parents or grandparents," says Inglis, executive dfirector of the conservative climate group republicEn.
Inglis says for this generation, addressing climate change is becoming a moral issue more than a political one. And that makes him optimistic the country will eventually take more action to address the problem.
"The demographics are definitely going to deliver a win for climate change. I am absolutely certain we are going to win on climate policy. The question is whether we win soon enough to avoid the worst consequences," Inglis said.
Scientists say that time line is short, but Inglis believes the country is more likely to succeed if both sides of the aisle are focused on the challenge.
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