A novel experimental technique detects cancer cells shed into the blood by a fledgling tumor.

Researchers for the first time experimentally demonstrated the operation of a simple quantum computer to perform an efficient search.

The diameter of a tree stem changes with the rhythm of the tides.

Geologists have solved a decades-old puzzle about lava deposits on Mount Rainier.

A new device harnesses sunlight to produce hydrogen gas by electrochemically splitting water.

Climate change measure for the common folk 

Researchers have developed what they call a common-sense climate index to flag when people in a region would notice long-term changes in climate.

Educational achievement and income do not by themselves explain why blacks use the Internet at a lower rate than whites.

Deeply held religious faith hastens recovery from mild to moderate depression among elderly people.

Research Notes

The nation’s top choice for a nuclear waste repository is more geologically active than expected.

The walls of a castle in Israel display the scars of a quake from the year 1202.

Researchers describe the first carnivorous plant known to prey on protozoa.

Plumage differences that show up mainly at ultraviolet wavelengths visible to birds may account for why female blue tits are preferentially attracted to certain males.

Italian paleontologists have found fossilized intestinal remains and other soft tissue preserved inside a dinosaur.

Newly found fossils of ancient birds provide important evidence of the transition from dinosaurs to birds.

As courts increasingly address science-related issues, judges are exploring ways to ensure that scientific testimony is reliable.

The merger of two microbes may explain the origin of energy-generating structures in cells.