New video out for parents wondering about my Kid's Mask Summary Spreadsheet. It's less than 20 minutes and should hit all the key points, and help answer those common questions. youtu.be/A88AGnN-nwI

My OpEd today Yes, everyone needs to wear high-quality #masks in #schools, but that’s not the only urgent action necessary to keep kids safe -- we desperately need to focus on air quality by adding #HEPA filters & by addressing the risks at lunch time,🧵👇 denverpost.com/2021/08/19/sch…

People often assume that capitalism is defined by "markets and trade". But markets and trade existed for thousands of years before capitalism. Capitalism is only 500 years old. So what is distinctive about this economic system? Three things (well, more, but three for now):

Today is the day! The nature #COVIDconsensus paper is now live at go.nature.com/3NtcfCM. All of our recommendations are 100% within human control and we need your help to spread the message to end #COVID19 as a #publichealth threat! #CovidTwitter