Serious-minded human beings were working on the chlorophyll problem now, and they hadn’t done a lot better yet, but they were doing about fifteen percent better, which was not at all bad, considering. And people might do better yet, if they could get living crops to endure the terrible impact of that much-concentrated human ingenuity. And, in tandem, get the ecosystem to survive the terrible consequences should such a technique ever go feral. Alex was really interested in the chlorophyll hack. He’d read a lot about it, and was following the bigger net-discussions. It was just about the neatest hack he’d ever heard of.