When it comes to Covid-19, lots of people have their heads in the sand.
Sam Bowman directed me to a good site for debunking all those idiotic Covid denialist claims, such as the supposed Danish study that “proved” masks don’t work.
Lyman Stone is a good place for estimates of excess deaths. The official Covid death total for the US (over 400,000) is probably an undercount.
Zvi Mowshowitz is a good place to go for the latest estimates of how the disease is progressing.
Scott Aaronson provides an excellent defense of challenge studies and other proposals to speed up the process.
And of course Marginal Revolution has been the best place to learn about the things that we should have been doing all along.