The challenge, as oil runs out and climate change kicks in, is not just to grow enough food to feed so many people but to do it without wreaking more havoc on the planet.

• 伴随着石油资源消耗殆尽以及气候改变而来的挑战，不仅仅是生产出足够的食物来养活如此多的人口，并且还不能给地球造成巨大的灾难。