“What it does is kill rats on a local level, so it feels like you’re doing something. But you’re up against the brutal math of rodent reproduction.” A well-fed mother rat can have 10 or ...

Result: when a mother rat got a dose of one milliampere from the cathode (negative pole), the odds were 383-to-1 that her litter would be superior in intelligence; a dose of two milliamperes had ...