Philosophers Françoise Bastide and Paolo Fabbri were part of the Human Interference Task Force, employed by the US Department of Energy and Bechtel Corp at the Yucca Mountain Nuclear Waste Repository in 1981. Their solution consisted of two steps. The first step is to engineer a cat that changes colours in response to radioactivity. The second is to establish a culture around these cats, in which the theme is: If your cat changes colour, you should move somewhere else.
via http://www.theraycatsolution.com/#10000