Mysterious, spherical rocks litter the archaeological record — now researchers say there is evidence the balls were shaped on purpose. Plus, why a blockbuster superconductivity claim met a wall of scepticism and 2,000 unwanted rhinos get adopted. Mysterious, spherical rocks litter the archaeological record — now researchers say there is evidence the balls were shaped on purpose. Plus, why a blockbuster superconductivity claim met a wall of scepticism and 2,000 unwanted rhinos get adopted.
As cannabis laws relax, neuroscientist warns of its dangers for developing brain
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How a component of cannabis could fight addiction
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Potential Health Benefits of CBD – ictsd org
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