Evolution

But the dolphins are no slouches either

Adult humans laugh primarily on the exhale, but human babies laugh on the inhale and the exhale—as do chimps. Christopher Intagliata reports.

Researchers recorded piranha "honks" and catfish "screeches" in the Peruvian Amazon, which might illuminate fish activity in murky jungle waters. Christopher Intagliata reports.

A new analysis gives the fossil bird Confuciusornis an updated look.

Listening to the sounds panda pairs make when they're introduced could lead to better breeding success. Christopher Intagliata reports.

The finding could help answer a longstanding question of how massive stone blocks were hauled into place

The hues and patterns of modern bird eggs trace back to their dinosaurian ancestors

A tiny fly, related to biting no-see-ums, pollinates cacao trees and enables our chocolate cravings. Christopher Intagliata reports. 

A damaged frill bone allows us to revisit a brief moment in prehistoric time

Not a trick: We’ve been hooked on chocolate treats for a long time.

Remote-sensing studies have revealed the ancient settlements in southern Mexico

Little-studied ethnic groups are helping researchers to understand the movements of people who lived on the continent tens of thousands of years ago