A photo exhibition, entitled Angel's Smile, is being held at the No. 1 Cultural Center of Xicheng District in Beijing until Dec. 13. The exhibition displays 40 photos centering on children with SMA2, a genetic neuromuscular disorder that affects the nerves that control muscle movement.
https://t.cn/AiD24c1d

【迪拜测试"空中出租车" 外观就像一个大号无人机】Dubai has showcased a flight for what it said would soon be the world's first drone taxi service under an ambitious plan to lead the Arab world in innovation.
The flying taxi developed by German drone firm Volocopter resembles a small, two-seater helicopter cabin topped by a wide hoop studded with 18 propellers.
It was unmanned for its test flight Monday. (China Daily)

#脊髓性肌萎缩症# 基础知识——遗传篇（一）SMA是一种常染色体隐性遗传疾病，也就是说，患者一定带有2个致病的缺陷基因，分别遗传自父亲和母亲。如图所示，N代表1个正常的SMN1基因，而SMA则代表1个缺陷的SMN1基因。（a）患者的父母通常携带有1个致病缺陷基因，但并不会表现出症状。（b）带有SMN基因的染色体经遗传后，后代就会出现患者（SMA SMA）、SMA携带者（SMA N或N SMA）或健全人（N N）。父母双方都是携带者的话，他们每个孩子都有25%的几率遗传到2个缺陷的SMN1基因（罹患SMA）、50%的几率成为携带者（不会发病）或25%的几率遗传到两个正常的SMN1基因（健康）。