Cold Fusion by Harper Fox was pretty great. Mal is an environmental activist. Vivian is a physicist working on the cold fusion process, but his life is at stake.
I think this novel had way too many plotlines and would have worked better as 2 books. But I still recommend it as it's rare to find queer autistic representation. In that regard, check out the excellent Failure to Communicate by Kaia Sønderby.
There's major m/m, including explicit content.