theraycatsolution.com

Z8Lro TIL about the Ray Cat Solution, a way to keep future generations away from dangerous nuclear waste sites. The idea was to engineer a cat that changes colour in response to radiation — then create a culture around this cat so that if your cat changes colour, you should move someplace else.
jNMGQ TIL in 1981 members of a U.S. nuclear semiotics team believed if the world ended, survivors 10,000 years in the future might not know what the radiation symbol means. So they proposed breeding bioluminescent cats that would glow when they came near radiation to serve as living indicators of danger.