Elisabeth Rosenthal

With plant species disappearing at an alarming rate, scientists and governments are creating a global network of plant banks to store seeds and sprouts, precious genetic resources that may be needed for man to adapt the world's food supply to climate change.

For those of us trying to live a greener, more carbon-conscious life, the first two commandments should perhaps be these: "Thou Shalt not Own a Car" and "Thou Shalt not Fly Away on Vacation."