Neuroscience

Hand transplant recovery sheds new light on touch

Recovery of feeling can gradually improve for years after a hand transplant. That's the suggestion from a small study that points to changes in the brain, not just the new hand, as a reason.

Health

Colorado proposes edible pot ban, then retreats

Colorado health authorities suggested banning many edible forms of marijuana, including brownies, cookies and most candies. Then the officials quickly backtracked after the suggestion went public.

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