"To have any chance of feeding 10 billion people in 2050 within planetary boundaries" -- the limits on Earth's capacity to absorb human activity -- "we must adopt a healthy diet, slash food waste, and invest in technologies that reduce environmental impacts," said co-author Johan Rockstrom.

Dear Johan - Perhaps it's time instead to start culling the herd, or at least return to the days of ZPG advocacy. Instead of assholes like yourself demanding everyone slowly be herded to the friggin vegan lifestyle, maybe you fools should be asking your silly selves if testing the limits of "planetary boundaries" is the best choice! Does the world really need 10 billion people that will most certainly continue to breed like rabbits, and eventually double their numbers to 20 billion? How much is too much? Instead of pushing for accommodation of these prolific breeders, and a policy of appeasement, maybe you should be working on how to popularize birth control, or if needed, enforce sterilization! Better yet, simply stop interfering, and let Mother Nature send her message....famine and pestilence is her tried and true wakeup-call that you been screwing too much.

I've seen these claims before. I don't see why this doesn't get more attention vs the constant attacks on 'big oil' etc.