Read the Atlas Gene by A.G. Riddle, it’s the first book in a three book series (you need to read all three books to get the whole picture. Talks about aliens and their role in man's development, we are an experiment...Granted this is a work of fiction but who knows...Also I read this last year at the beginning of the pandemic, guess what there's a pandemic in the book, mass vaccination programs transforming the human race...I’m in the process of reading it again.