glowing microbes can help researchers clean up toxic soil
Coal miners used
to take canaries down in the pits with them to detect dangerous
amounts of carbon dioxide. If the canary kicked the bucket,
the miner got the message. Now British scientists are working
on a similar way to detect pollution. Researchers at the University
of Aberdeen have developed microorganisms, or "bugs"
that glow when all is well, but fade as they encounter toxic
chemicals in the ground.