Learn how male bonobos use subtle behavioral and reproductive cues to pinpoint the fertile window, even when the usual swelling signal gives them almost no useful information.
With a late-rising crescent moon and early evening activity, this year’s Geminids offer some of the best viewing conditions, displaying bright, colorful streaks long before midnight.
Learn how new high-resolution images of two nova eruptions offer fresh insight into how these stellar explosions release material and generate shock waves.
Learn how a unique combination of anatomical traits and CT-scan data led researchers to classify Chromeornis as a new dinosaur species — and reconstruct the behavior behind its unusual death.