Testing the toxicity of dozens of nanoparticles en masse may offer a faster track to medical applications.

Inhaling tiny pollution particles, even at concentrations allowed in urban air, appears to increase the risk that an individual’s veins will develop potentially lethal blood clots.

An improved way to make the sticky protein that mussels use to cling to underwater rocks could lead to better cardiac stents.

Bacteria are smarter than you might think. Single-celled microbes can learn to predict changes in their environments and prepare themselves.

Pregnant women with elevated blood sugar are more likely to have oversized babies, posing a risk to mother and newborn.

Quitting cigarettes shows health benefits even decades after the last puff.

A genetic variation that increases levels of a blood-building protein also ups the risk of developing complications from diabetes.