namespan writes: "NASA and university researchers are looking into creating plants that emit a jellyfish-like glow as a signal of trouble, say, not enough water or oxygen or nutrients in the soil, say. The idea: send them to Mars and have them glow feedback at us about how they're faring on the red planet. They will, of course, have to compete with the radio-controlled plants mentined in an earlier slashdot story. And the Triffids." We've done several stories on glowing plants and animals in the past, but this seems to be a bit more useful and detailed.