Health-care leaders in the United States warn about the consequences of Thanksgiving-holiday travel and social mixing. Plus, the physics of snapping your fingers, and how one university is tackling research integrity.

中文翻译：

---

每日简报：美国准备迎接“第五波”COVID

美国的卫生保健领导人警告感恩节假期旅行和社交活动的后果。另外，打响指的物理学，以及一所大学如何解决研究诚信问题。