Why do we go bald only on the top of the head?
Howard Barnes, Kempston, Bedfordshire, UK
We pay 拢25 for every answer published in New 杏吧原创. To answer this question 鈥� or ask a new one 鈥� visit newscientist.com/lastword. Terms and conditions apply.
Advertisement
This article appeared in print under the headline 鈥淭hin on top鈥�