News
- Tech
Exploding wires open sharp X-ray eye
Using exploding wires to make low-energy X-rays, a novel, high-resolution camera snaps X-ray pictures of millimeter-scale or larger objects—such as full insects—in which features only micrometers across show up throughout the image.
- Earth
Researchers confirm sea change in oceans
A new analysis of ancient seawater shows that the ocean's chemistry has fluctuated over the last half-billion years.
- Animals
Magnetic field tells nightingales to binge
Young birds that have never migrated before may take a cue from the magnetic field to fatten up before trying to fly over the Sahara.
- Health & Medicine
Even high-normal blood pressure is too high
Blood pressure at the high end of what is defined as the normal range is closer to "high" than to "normal" in terms of risk of associated heart disease.
