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Health & MedicineMad cow disease might linger longer
A rare but deadly human illness spread by cannibalism has an incubation period in some individuals of about 4 decades.
By Nathan Seppa -
EarthWarning: Slow down for whales
To protect a major population of right whales, the U.S. government is proposing periodic go-slow rules for big ships passing through the animals' migration routes.
By Janet Raloff -
19707
Scientists seek environments that are weightless, near-perfect vacuums in which to conduct experiments. If genuine cloaking were achieved, I would expect there would be a host of experiments that might be conducted in “perfect darkness”—environments free of various energy wavelengths. Bernard RiceHinsdale, Ill.