News

Tech

Micromachine runs on nuclear power

Radioactivity creates electric fields that wiggle a tiny lever.

Health & Medicine

Budding Tastes: Higher blood pressure in newborns links to salt preference

Babies who tolerate a salty flavor have higher blood pressure on average than their less tolerant counterparts do.

Earth

Nature’s Own: Ocean yields gases that had seemed humanmade

Chemical analyses of seawater provide the first direct evidence that the ocean may be a significant source of certain atmospheric gases that scientists had previously assumed to be produced primarily by industrial activity.

Astronomy

X-Ray Chaos: Violence shows itself in a nearby galaxy

New X-ray observations provide additional evidence that Centaurus A, the nearest radio-wave-emitting galaxy to Earth that has a supermassive black hole, is a maelstrom of violence.