I was doing some research for the final touch ups to my book. I needed the name of a book my heroine, Teresa, had bought in July 1980, precisely forty summers ago. I searched the internet for a familiar title, but nothing. Then I remembered my bookcase, where I keep many books from my youth. By an amazing coincidence, the first one I grabbed was The Swarm, by Arthur Herzog, a sci fi /terror book about the invasion of …