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Matter & Energy

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BAD AIR  Reactive molecules in air pollution, including from car exhaust, may thwart immune responses in babies’ lungs. The immune response possibly explains how bad air spurs severe infections and chronic asthma.


Compared with marijuana grown 30 years ago, modern weed contains more THC, the chemical that gives pot its psychoactive effects, and less CBD, the compound thought to have therapeutic potential, a new analysis suggests. 

Matter & Energy

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