Science

How High Is Too High to Drive?

LIGHT UP

States that have legalized marijuana are trying to set standards for pot impairment that would help keep the roadways safe. But the science behind it is not clear-cut.

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By Shefali Luthra, Kaiser Health News

It used to be the stuff of stoner comedies and “Just Say No” campaigns. Today, marijuana is becoming mainstream as voters across the country approve ballot questions for legalization or medical use.

In response, state governments are testing ways to ensure that the integration of...

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