Sure you love your kids—but do they know that?

We all know how important it is to tell our kids we love them (or do we?). But how often do we actually show them? In a very cool study that was just published in the Proceedings of the National Academy of Science found that the children of nurturing, caring parents have larger hippocampi (hippocampus is the singular, but we all have two—one on each side of the brain) than kids whose parents are less nurturing and caring.

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