Scientists have proposed that Earth’s solid inner core (yellow in this diagram) rotates faster than the rest of Earth. A new study suggests the core’s rotation has recently paused, and is reversing direction. fpm/E+/Getty Images Plus By Nikk Ogasa January 23, 2023 at...

The adult sea spider ( Pycnogonum litorale ) in this microscope image made a full recovery after its back half was amputated, showing that arthropods can regrow more body parts than scientists realized. G. Brenneis By Erin Garcia de Jesús January 23, 2023 at 3:13 pm...

Cratonavis , a newly discovered bird from 120 million years ago, might have filled a similar niche as today’s raptors, though whether it could catch prey as large as illustrated here is up for debate. Zhao Chuang By Aaron Tremper January 24, 2023 at 8:00 am A...

Planets with twin suns, such as this hypothetical world in the Kepler-35 system (shown in an artist's impression), may make up the bulk of habitable worlds in the universe. JPL-Caltech/NASA By James R. Riordon January 24, 2023 at 10:00 am SEATTLE — Luke Skywalker’s...

Scientists estimate that some 20 percent of adults are chronic procrastinators. A little self-compassion might help. Henrik Sorensen/DigitalVision/Getty Images By Meghan Rosen 4 hours ago The worst procrastinators probably won’t be able to read this story. It’ll...