Life
- Life
Here’s how sea anemones launch their venomous stingers
Starlet sea anemones use speedy projectiles to sting predators and prey. New images capture a detailed look at these weapons in action.
- Health & Medicine
How scientists are shifting their search for links between diet and dementia
Studies of food’s impact on Alzheimer’s disease and dementia are hampered by complexity. Scientists hope new research approaches prove more fruitful.
- Paleontology
Feathers may have helped dinosaurs survive the Triassic mass extinction
New data show that dinosaurs were able to weather freezing conditions about 202 million years ago, probably thanks to warm feathery coats.
- Paleontology
Megatooth sharks may have been higher on the food chain than any ocean animal ever
Some megalodons and their ancestors were the ultimate apex predators, outeating all known marine animals, researchers report.
- Animals
50 years ago, eels’ navigation skills electrified scientists
Excerpt from the June 24, 1972 issue of Science News
- Environment
Earth’s oldest known wildfires raged 430 million years ago
430-million-year-old fossilized charcoal suggests atmospheric oxygen levels of at least 16 percent, the amount needed for fire to take hold and spread.
- Microbes
This giant bacterium is the largest one found yet
On average, Thiomargarita magnifica measures 1 centimeter long and maxes out at 2 centimeters. It is 50 times larger than other giant bacteria.
- Paleontology
Vampire squid are gentle blobs. But this ancestor was a fierce hunter
New fossil analyses of 164-million-year-old ancestors of today’s vampire squid show the ancient cephalopods had muscular bodies and powerful suckers.
- Chemistry
Cats chewing on catnip boosts the plant’s insect-repelling powers
When cats tear up catnip, it increases the amount of insect-repelling chemicals released by the plants.
- Animals
These tiny marsupials survived wildfires only to face extinction from feral cats
The Kangaroo Island dunnart was one species seen to reemerge after 2019–2020 Australian bushfires but is now closer than ever to extinction.
- Ecosystems
Some polar bears in Greenland survive on surprisingly little sea ice
“Glacial mélange” could provide a last refuge for some bears as the Earth warms, but climate action is needed to preserve the species, researchers say.
- Animals
Here’s why pumpkin toadlets are such clumsy jumpers
Tiny Brachycephalus frogs from southern Brazil can leap into the air but have trouble landing.
