8,303 results
8,303 results for: Fish
- Animals
Some penguins save energy by riding ocean currents
When navigating home, Magellanic penguins alternate between heading straight back in calm waters and swimming with the flow in strong ocean currents.
- Paleontology
Mummified reptile hints at the origins of how we breathe
A cave preserved two animals’ rib cages, cartilage and even traces of protein, revealing a flexible breathing apparatus like that of today’s land dwellers.
- Life
From viruses to elephants, nature thrives on tiled patterns
A compilation of 100 examples of biological tilings shows how repeated natural motifs enhance strength, flexibility and other key functions.
- Animals
Sharks are ingesting drugs in the Bahamas
Nearly one third of sharks studied near the Bahamas’ Eleuthera Island were found to have caffeine, painkillers and other drugs in their bloodstreams.
- Animals
Crabs’ sideways walk may have evolved just once
A study of 50 crab species in Japan traces the iconic sideways walk to a single ancestor, suggesting the trait drove the group's remarkable diversity.
- Animals
50 years after ‘Jaws,’ sharks face their own terror
Humans have driven sharks and their cousins to the brink of extinction. The health of the entire ocean is at stake.
- Animals
Animals experience joy. Scientists want to measure it
Scientists have long focused on quantifying fear and other negative emotions in animals. Now they’re trying to measure positive feelings — and it’s a challenge.
- Paleontology
Fossilized vomit reveals 290-million-year-old predator’s diet
The regurgitated material from before the time of dinosaurs provides a rare window into the feeding habits of a prehistoric hunter.
- Microbes
This giant microbe organizes its DNA in a surprising way
3-D microscopy shows that the giant bacterium Thiovulum imperiosus squeezes its DNA into peripheral pouches, not a central mass like typical bacteria.
- Health & Medicine
What freediving can reveal about human health — and our limits
The practice of freediving is teaching physiologists how humans stretch their physical and mental limits, which in turn may improve treatments for lung and heart ailments.
- Genetics
Why African striped mice can be the best of dads — or the worst
Environmental cues can flip a molecular switch in the brain, turning males from caregivers to killers.
- Math
Huge Numbers tackles mathematics at its most incomprehensibly large
Mathematician Richard Elwes surveys googology, the study of enormous numbers, in a new book.
