If you think about it, skeletons aren't awesome. Instead of the super strong shells or exoskeletons so many other animals have, we have internal skeletons that leave us highly vulnerable. But it turns out our skeletons are an evolutionary advantage.
via Discovery News http://news.discovery.com/human/videos/why-do-we-have-an-internal-skeleton-video.htm#mkcpgn=rssnws1
via Discovery News http://news.discovery.com/human/videos/why-do-we-have-an-internal-skeleton-video.htm#mkcpgn=rssnws1
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