
The Fatal Error of an Ancient, HIV-Like Virus
It got too cozy with its host.
Our health writers explore wellness culture, human behavior, mortality and disease, and other mysteries of the body and the mind.

It got too cozy with its host.

In the U.S., medication abortion usually consists of two drugs. One of them has always mattered more.

Is this what normal now looks like?

The world has been so close to eradicating polio for so long—which is exactly why the virus is staging a comeback now.

Welcome to the two-vaccine conundrum.

There’s no such thing as a dog that can’t cause allergies.

Why do so many kids need glasses now?

Brain fog isn’t like a hangover or depression. It’s a disorder of executive function that makes basic cognitive tasks absurdly hard.

Conserving groundwater could lead to dirtier air in some of the state’s most vulnerable communities.

Prepare yourself for a lifetime of fall vaccine campaigns.