Life
- Paleontology
Insect bites in plant fossils reveal leaves could fold shut millions of years ago
The 252-million-year-old fossil leaves have symmetrical holes, which suggest an insect bit through the leaves when they were folded.
- Animals
Why male giraffes drink potential mates’ pee
In giraffes, an organ that detects pheromones has a stronger connection to the mouth than the nose. That’s different from many other mammals.
- Animals
Cockatoos can tell when they need more than one tool to swipe a snack
Cockatoos know when it will take a stick and a straw to nab a nut in a puzzle box. The birds join chimps as the only known nonhumans to use a tool kit.
- Paleontology
This dinosaur might have used its feet to snag prey in midair like modern hawks
Fossilized toe pads suggest a hawklike hunting style in Microraptor, a dinosaur that some scientists think could hunt while flying.
- Paleontology
In the wake of history’s deadliest mass extinction, ocean life may have flourished
Ocean life may have recovered in just a million years after the Permian-Triassic mass extinction, fossils from South China suggest.
- Life
Orca moms baby their adult sons. That favoritism pays off — eventually
By sharing fish with their adult sons, orca moms may skimp on nutrition, cutting their chances of more offspring but boosting the odds for grandwhales.
- Health & Medicine
How fingerprints form was a mystery — until now
A theory proposed by British mathematician Alan Turing in the 1950s helps explain how fingerprint patterns such as arches and whorls arise.
- Microbes
Some ‘friendly’ bacteria backstab their algal pals. Now we know why
The friendly relationship between Emiliana huxleyi and Roseobacter turns deadly when the bacteria get a whiff of the algae’s aging-related chemicals.
- Life
Mammals that live in groups may live longer, longevity research suggests
An analysis of nearly 1,000 mammal species reveals that the evolution of mammals’ social lives and life spans could be linked.
- Animals
Fish can recognize themselves in photos, further evidence they may be self-aware
Cleaner fish recognize themselves in mirrors and photos, suggesting that far more animals may be self-aware than previously thought.
- Animals
Here are 3 people-animal collaborations besides dolphins and Brazilians
Dolphins working with people to catch fish recently made a big splash. But humans and other animals have cooperated throughout history.
- Life
How plant ‘muscles’ fold up a mimosa leaf fast
A mimosa plant revs up tiny clumps of specially shaped cells that collapse its leaflets, though why isn’t clear.
