Within 100 years, says President James Bryant Conant of Harvard, science will have found a safe contraceptive that can be taken by mouth and the world will have a remedy for overpopulation. Last week British researchers reported an early lead in that direction. They had made an extract from a common countryside herb called gromwell (Lithospermum officinale) and given it first to female rats. The rats stopped ovulating. When the gromwell was stopped, they promptly resumed ovulating and proved, by becoming pregnant, that their fertility had been only temporarily arrested.
Next, the researchers gave the gromwell extract to humans to check...
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