Once babies start crawling, they become more wary of heights, new research shows. The infant in this video is careful not to go near a glass-covered virtual edge.
via LiveScience.com http://www.livescience.com/38429-crawling-helps-babies-learn-to-fear-heights-video.html
via LiveScience.com http://www.livescience.com/38429-crawling-helps-babies-learn-to-fear-heights-video.html
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