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Paleontology

Pterosaurs may have had brightly colored feathers on their heads

The fossil skull of a flying reptile hints that feathers originated about 100 million years earlier than scientists thought.

Animals

Dog breed is a surprisingly poor predictor of individual behavior

Despite the popular conviction that dog breeds are associated with specific traits, breed accounts for only 9 percent of behavioral differences.

Neuroscience

Mom’s voice holds a special place in kids’ brains. That changes for teens

Unfamiliar voices hold special appeal for teens, a sign of a shift from a focus on mostly family to wider networks, brain scans suggest.

Health & Medicine

Joggers naturally pace themselves to conserve energy even on short runs

Data from fitness trackers and treadmill tests challenge ideas about what drives speed.