Hours of daylight as a function of day of the year and latitude. Took me a second to read this chart. Totally worth the second of effort. A marvellous animation. Source: https://t.co/pJk5c4vM2zpic.twitter.com/sNyAUm2OhY
If we want to understand how powerful an opponent SARS-CoV-2 (COVID-19) is, let’s take a look what has been required to stop it in China. The Chinese government has essentially used a social nuclear weapon in its efforts. Let’s talk about this, to understand what US is facing. 1/
— Nicholas A. Christakis (@NAChristakis) March 9, 2020
