Author: David Leonhardt

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.

Katharine Moser chose to find out her genetic destiny in 2005. We revisit her story on her 40th birthday.

Many parents want to continue remote learning. It may not be so good for their children.