Animals
- Life
Rare reptile holds clue to penis evolution
Preserved Victorian specimens reveal budding embryonic penis that disappears before adulthood.
- Animals
Cat-versus-virus arms race goes back millennia
Researchers have found evidence of an ancient arms race between Felis silvestris catus, the species familiar today as the domestic cat, and feline immunodeficiency virus.
- Animals
Salamander ancestors could regenerate limbs
Salamanders and ancient amphibians share similar way of regenerating limbs.
- Animals
As panda baby grows, mom’s milk changes
In the first month after a mama panda gives birth, her milk changes in composition, a new study finds.
- Animals
Howler monkeys sacrifice sperm for deeper roars
In howler monkeys, expanded vocal tracts make for deeper-voiced males with smaller testes, researchers find.
- Animals
Invasive species may be great snacks for predators
The arrival of a new food source can benefit predators, a new study finds. But if there are no native species around to eat, it’s a different story.
- Paleontology
Furry, spiky mammal scampered among dinosaurs
Early Cretaceous fur ball with spikes discovered in Spain.
- Animals
For glowworms, the brightest girls get the guy
Brighter female glowworms attract more mates and lay more eggs than their dimmer peers.
- Physics
Pentaquarks, locked-in syndrome and more reader feedback
Readers discuss pentaquark sightings, delightful diatoms and whether an ancient four-legged fossil was actually a snake.
- Genetics
Asian tiger mosquito genome sequenced
Researchers have sequenced the genome of the Asian tiger mosquito, a stealthy invasive species and carrier of tropical diseases.
- Animals
How architecture can make ants better workers
The right nest architecture can make harvester ants better at their job, new research shows.
- Animals
For glowworms, the brightest girls get the guy
Brighter female glowworms attract more mates and lay more eggs than their dimmer peers.
