Author: David Leonhardt

The C.D.C. recommends indoor masking for the vaccinated, but only in some places.

Conservative justices retire by their 80s. Some liberals don’t. Why not?

We offer advice about how to think about the cases.

Vaccine mandates are controversial. They’re also a way to save lives.

Covid is a terrible health crisis. It’s not the country’s only health crisis.

The F.D.A. is encouraging people to get a Covid-19 shot — but hasn’t formally approved those vaccines.

Summers in Philadelphia and Washington, D.C., are hotter than Atlanta summers were not so long ago.

Many vaccine skeptics have changed their minds.

President Biden’s ambitious legislative agenda faces many hurdles. But Democrats appear notably unified for now.

The Delta variant is more contagious. It does not appear to be more severe.