But I was lying on the beach, staring at sun through the pine trees overhead, so I carried on thinking. What if we found the gene that makes humans grow into adults, and knocked it out? Like, if we stopped growing physically at age 10. So we breed a new generation of smaller, shorter humans - suddenly the world would be big enough for everyone again! We'd need less space for ourselves, our cars, our houses. Our carbon footprint would become more manageable...
