Most histories of the 1918 influenza pandemic that killed at least 50 million people worldwide say it ended in the summer of 1919 when a third wave of the respiratory contagion finally subsided. Yet the virus continued to kill. A variant that emerged in 1920 was lethal enough that it should have…

When you mix science and politics, you get politics. With the coronavirus, the United States has proved politics hasn’t worked. If we are to fully reopen both the economy and schools safely — which can be done — we have to return to science. To understand just how bad things are in the United…