Science Frontiers · extreme-science

Filed by Dr. Vera Quark

Snake embryos begin life curled into a distinctive right-handed spiral, and scientists may finally know why. Their bodies grow faster than their guts, creating a tether that forces the lengthening embryo to buckle and twist inside the egg. Researchers reached the conclusion after studying more than 900 embryos and using CT scans to reveal the hidden anatomy behind the coils.