Stories by Katherine Harmon

Fido's cousins may be Eurasian wolves, but new findings complicate the details of domestication

Brain scans reveal how hate begins to emerge--and it's not too far from love

The relatively common breathing disorder, obstructive sleep apnea, appears to bring with it a greater chance of dying sooner, especially for middle-aged and senior men

Three subjects with a rare form of visual impairment found their sight still better a year after gene therapy, and their immune systems seemed happy with the treatment, too

Ever wished you could get by with less sleep? Some people can--and don't seem to be any worse off for it--thanks, possibly, to one unusual mutation

An improvement in microscopic dye analysis is allowing scholars to study the origins and histories of ancient, colorful art

What do itch and pain have in common? Maybe less than researchers previously thought. A team of scientists is learning more about the "itch gene" and how it works separately from pain pathways

Bypass surgery patients who were on a heart-lung machine often find their brain function slipping for months or years afterward. A new study--and a simple lesson in the scientific method--points to cardiac disease itself as the underlying cause of "pump head"

Also: burning nitrogen, cancer clue in Down's syndrome, and gallons per mile