All Stories
- Paleontology
Saber-toothed kittens were born armed to pounce
Even as babies, saber-toothed cats had not only oversized canine teeth but also unusually powerful forelimbs.
- Tech
Origami outfits help these bots change tasks swiftly
These robots change shape by slipping into different origami exoskeletons.
- Paleontology
This giant marsupial was a seasonal migrant
The giant, extinct marsupial Diprotodon optatum migrated seasonally, the first marsupial shown to do so.
- Paleontology
This giant marsupial was a seasonal migrant
A new analysis suggests that Diprotodon optatum, a giant plant-eating marsupial that went extinct about 40,000 years ago, migrated long distances, much like today’s zebras and wildebeests.
- Animals
To test sleep, researchers don’t let sleeping jellyfish lie
Upside-down jellyfish are the first known animals without a brain to enter a sleeplike state.
- Physics
Turning up the heat on electrons reveals an elusive physics phenomenon
Heating a strip of platinum creates a “spin current” in the material’s electrons due to the spin Nernst effect.
- Health & Medicine
About 1 in 5 teens has had a concussion
Almost 20 percent of U.S. teens have had at least one diagnosed concussion in the past, an analysis of a 2016 national survey finds.
- Health & Medicine
About 1 in 5 teens has had a concussion
Almost 20 percent of U.S. teens have had at least one diagnosed concussion in the past, an analysis of a 2016 national survey finds.
- Anthropology
Neandertal kids were a lot like kids today — at least in how they grew
Ancient youngster’s spine and brain grew at relatively slow pace.
- Health & Medicine
From day one, a frog’s developing brain is calling the shots
Frog brains help organize muscle and nerve patterns early in development.
- Health & Medicine
Telling children they’re smart could tempt them to cheat
Kids who were praised for being smart were more likely to cheat, two studies suggest.
- Environment
The way poison frogs keep from poisoning themselves is complicated
Gaining resistance to one of their own toxins forced some poison dart frogs to make other genetic tweaks, too.
