When Best Of lists come out at the end of the year, I try to read as many of the top children‘s books as I can get my hands on, just to see how things have changed since I was a kid. I‘ve read most of Selznik‘s books, but this one, following sibling seeds Melvin and Louise as they try to save the world in a planty seedy way - is by far my favorite. He tossed the idea around w/ Spielberg for a movie, but then the pandemic hit. A science-y delight!