News

Humans

Chemists distinguish between gunshot residue from various firearms

Analytical technique could lead to better crime scene investigation.

Health & Medicine

Extreme eaters show abnormal brain activity

Seeing images of food revs up reward areas in the obese and slows them down in severely underweight people, a brain scan study shows.

Life

Stem cell treatment spurs cartilage growth

A small molecule called kartogenin prompts the manufacture of lost connective tissue in mice.

Paleontology

T. rex has another fine, feathered cousin

A trio of fossils from China may tip the scales on dinosaurs’ public image.