Finnish researchers just published the first big test of the “biodiversity hypothesis”—that exposure to the microbes in dirt is good for young immune systems. 

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Finnish researchers just published the first big test of the “biodiversity hypothesis”—that exposure to the microbes in dirt is good for young immune systems. Learn about your ad choices: dovetail.prx.org/ad-choices

Finnish researchers just published the first big test of the “biodiversity hypothesis”—that exposure to the microbes in dirt is good for young immune systems. 

Learn about your ad choices: <a href="https://dovetail.prx.org/ad-choices" rel="noopener noreferrer">dovetail.prx.org/ad-choices</a>

What Forest Floor Playgrounds Teach Us about Kids and Germs

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