I think the earth can probably continue to support a few more billion humans, although obviously I'm no expert. I also have a possibly unwarranted faith in hum

I think the earth can probably continue to support a few more billion humans, although obviously I'm no expert. I also have a possibly unwarranted faith in humanity's ability to develop new technologies which enable large numbers of humans to live in the planet. From what I understand, the transition from hunting and gathering to agriculture came.about when humans hunted large game to extinction. Humans might be a bit more adaptable than rats