Russ Juskalian

Thanks to sophisticated imaging technology and a raft of longitudinal studies, we're learning that the teen years are a period of crucial brain development subject to a host of environmental and genetic factors.

Voters in several states said no to more-liberal marijuana laws. But for scientists, restrictive pot policy could be keeping them from better understanding how the drug works on our brains and bodies.

Though Alcoholics Anonymous and the many subspecies of programs it has birthed still dominate the alcohol-treatment landscape, new remedy ideas that don't include abstinence are starting to get attention.

A mysterious rash leads to a confusing diagnosis and more questions than answers. Although Lyme disease has been an American presence for 35 years, there's still a lot doctors don't know about it.

How science can protect runners and cyclists as days grow shorter.

Drug taboos may block a potential treatment for cluster headaches, one of the most painful conditions known.

Inside the young science of keeping callers on the line. Damn you, Erik Satie.

What does it mean to receive an end-of-life prognosis? Less than you think.

Is cryptomnesia—copying the work of others without being aware of it—to blame for journalism's ultimate sin? Um, maybe not.