The origin of 4/20 as a symbol for weed is something of a meme in itself. Or, at least it is in the sense that nobody really knows where it came from but society has completely picked it up and ran ...

Here is a first: a neuroscience experiment on the effects of marijuana smoking on the brain in human participants, on national television. Dr. Lucy Troup, a cognitive neuroscientist from the ...

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Smoking cannabis ages the brain by an average of nearly three years, according to new research. Marijuana was found to ramp up brain aging by 2.8 years making it worse for your mind than bipolar ...