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WASHINGTON — Like pubescent children, the oil paintings of Georgia O’Keeffe have been breaking out with “acne” as they age, and now scientists know why.

Tiny blisters, which can cause paint to crack and flake off like dry skin, were first spotted forming on the artist’s paintings years ago. O’Keeffe, a key figure in the development of American modern art, herself had noticed these knobs...

WASHINGTON — Beliefs among some university professors that intelligence is fixed, rather than capable of growth, contribute to a racial achievement gap in STEM courses, a new study suggests.

Those professors may subtly communicate stereotypes about blacks, Hispanics and Native Americans allegedly being less intelligent than Asians and whites, say psychologist Elizabeth Canning of Indiana...

An invisible drizzle of subatomic particles has shown that thunderstorms may store up much higher electric voltages than we thought.

Using muons, heavier relatives of electrons that constantly rain down on Earth’s surface, scientists probed the insides of a storm in southern India in December 2014. The cloud’s electric potential — the amount of work necessary to move an electron from one...

Warmer springs and summers could make house flies friskier, spreading diarrhea-causing bacteria to more places. As a result, foodborne Campylobacter infections could increase with climate change, proposes epidemiologist Melanie Cousins of the University of Waterloo in Canada. 

Cousins’ computer simulation, still a proof-of-concept version, focuses on how the warm weather surge in house...