Tiny New Moon Discovered Around Neptune

A diminutive nugget of a moon has been discovered lurking in the inner orbit of Neptune. The moon, dubbed Hippocamp, is about the size of Chicago and so faint only…

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Flu Vaccine Doing a Relatively Good Job This Season

Health officials say the flu vaccine is doing a relatively good job this season, protecting about half the people who got it. Preliminary figures suggest the vaccine is 47 percent…

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Northwest Measles Cases Prompt Look at Vaccine Exemptions

A measles outbreak near Portland, Oregon, has revived a bitter debate over so-called “philosophical” exemptions to childhood vaccinations as public health officials across the Pacific Northwest scramble to limit the…

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