News

Earth

No-drive experiment curbs air pollution in Beijing

Traffic-control measures can significantly reduce urban air pollution, a field study in Beijing this past summer indicates.

Humans

An earlier thaw can trim winter logging

In New Hampshire, the trend toward earlier spring thaws has significantly lowered logging revenues.

Paleontology

Struck from above

Evidence of an extraterrestrial object striking Earth at the height of the last ice age comes from micrometeorites embedded in the tusks of creatures that were grazing the Alaskan tundra when the object burst in the air above.

Health & Medicine

Keeping metabolic syndrome at bay

Chromium supplements reduced some of the unhealthy effects of a sedentary lifestyle in rats.