News

Astronomy

Tweak to dark matter may explain Milky Way mystery

Dark matter weakly interacting with light in the early universe might have prevented satellite galaxies from forming around Milky Way, astronomers propose.

Tech

Hydrogen made using sunlight, cheap materials

Photosynthesis-inspired fuel cell uses water to make hydrogen gas and could feature in next-generation cars.

Agriculture

Drug-resistant staph can cling to farm workers for days

Agricultural exposure to staph bacteria could threaten the health of laborers and people who live near farms, a study of pig farm workers suggests.

Health & Medicine

Mass EKG screening for athletes inadvisable, panel says

Only athletes with warning signs of cardiac problems should be tested with electrocardiograms, according to the American Heart Association and American College of Cardiology.