Stories by Katherine Harmon

A long-held model of the brain's efficiency crumbles as researchers find that one function of mammals' brains consumes a lot less energy than previously assumed. Now, basic measurements of neural activity--from brain energy budgets to fMRI results--may have to be reassessed

An unlikely team of cardiologists and plastic surgeons have found a way to make adult induced pluripotent stem cells quickly and easily from a readily available resource--fat

Possibly joining the ranks of virus-linked cancers, virulent prostate cancers have shown a common thread: the XMRV gammaretrovirus

A new method of DNA tagging and tracking individual virus-attuned T lymphocytes shows the body to be incredibly efficient in recruiting just the right 10 cells out of a million

Nurse-only medical clinics in stores do just as well treating minor afflictions as visits to a full-fledged physician--and boast lower costs and no need for appointments

The remote eastern Himalayas--home to tiny deer and big vipers--have offered enterprising researchers a wealth of new species to document and describe

Research shows that clinical trial participants want to know if an investigator stands to profit from the outcome of a study, even though such disclosure not currently required. But some think that's just signing off on a larger problem

Whereas some scientists are using the stomach to help grow a cardiac patch, others are putting heart cells together on a scaffold where they are keeping a beat on their own

From avian flu to cholera, infectious diseases may not be able to hide for long. Some researchers have their sights trained on predicting their every move with detailed satellite data