You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
I'm new here, but I didn't see this posted: A new nonfiction book titled "Darwin Deleted", which explores what would've happened if Darwin died before he published on the origin of species. I haven't read it, but according to this review, the author argues the biggest change would be a more gradual understanding of natural selection, perhaps leading to less conflict between church and science (At least for biology; creationists may have turned their focus on geology instead.) He also dismisses the arguments that Social Darwinism or the Holocaust would've never happened, arguing there were much more significant factors in play in both.
I'll have to wait until I read the book to give a full opinion, but the argument is sound, I think. Darwin, after all, didn't dream up the theory of evolution -- he simply provided the mechanism that explained how organisms evolved. He also was in a much better position than Wallace to promote his ideas. My one quibble is I believe evolution would have remained opposed by fundamentalists -- fights like the Scopes Monkey Trial would have been delayed rather than avoided.