Five Best Ideas of the Day
Published each weekday, at noon.
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Earth’s inner core is younger than we thought — and that could explain how life got its start here.
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Regular aerobic exercise could improve thinking skills at almost any age.
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This cocktail-inspired medical treatment could be the future of birth control for men.
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How we all hold the power to shut down fake news.
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Powered by your own movement, these smart joint implants can reduce the need for knee replacement.