Ancient cave markings may have served as calendar, number system, and future planner.
https://t.co/iCheJqPXHu

Diving has evolved in birds at least 14 separate times. The process has never gone in reverse.
https://t.co/WDh0SIwdPv

Adapting to life in the far north required a change in diet for one early primate.
https://t.co/2UC2YBJac9

Watch these mini machines transform from solid to liquid —  and back again —  with a magnetic field.
https://t.co/Ru1uoqxaKZ

The finding suggests that Ice Age hunter-gatherers were pretty smart.
https://t.co/iCheJqPXHu

In a study of thousands of university students, procrastinators were slightly more stressed and anxious than their more prompt peers.
https://t.co/GZH9hWecgt

Tatooine-like planets in orbit around pairs of stars might be our best bet in the search for habitable planets beyond our solar system.
https://t.co/LTxUfjGi9C

Decades of research has shown that oxytocin is essential for monogamous prairie voles to bond with their mates. But a new study shows that the hormone isn’t always needed.
https://t.co/Frx2XRverj

Cratonavis, a newly discovered bird from 120 million years ago, might have filled a similar niche as today’s raptors.
https://t.co/VudeS49G76

Some sea spiders can regenerate nearly complete parts of their bottom halves.
https://t.co/oHJnFkMc6w

If society can achieve net-zero emissions, it will rank as one of humanity’s greatest accomplishments. We will have tackled a problem of our own making and conquered it.
https://t.co/VqKWzIsre1

The inner core’s rotation may have stopped and reversed. Such a profound turnaround might sound bizarre, but our planet is volatile.
https://t.co/KZawSB4Nvk

The Amami rabbit is the only wild dark-skinned rabbit in the world, and it resembles ancient rabbits that lived in Asia millions of years ago.
https://t.co/j7IWBml1QW

Scientists have tied procrastination to mental and physical health problems. But don't panic if you haven't started your New Year's resolutions yet. 
https://t.co/GZH9hWecgt

“We don’t have the systems for collecting end-of-life products that have rare earths in them.”
https://t.co/owBfJtwgec

“There are substantial morphological adaptations for diving.”
https://t.co/WDh0SIwdPv

Understanding seed dispersal can reveal how plants thrive and also respond to climate change.
https://t.co/j7IWBml1QW

Few fossils bridge the gap between dinosaur and bird. This one could help fill in some details.
https://t.co/VudeS49G76

Markings on cave walls dating back nearly 40,000 years have long been a mystery.
https://t.co/iCheJqPXHu

The direction of the inner core’s rotation may be reversing.
https://t.co/KZawSB4fFM