With a little genetic tinkering, fast? growing fish and freeze resistant fruits will help feed an overpopulated planet, but such hybrids could unwittingly wipe out the food chain.

• 有了稍经基因修复、快速养殖的鱼和防冻水果，人口过多的星球将获得足够的食物，不过，这些合成物可能不知不觉地彻底摧毁食物链。