Life
- Animals
Mixed Butterflies: Tropical species joins ranks of rare hybrids
A South American butterfly is one of the few animal species that seems to have arisen via the supposedly rare path of crossing two older species.
- Paleontology
Amphibious Ancestors
Newly discovered fossils from Greenland, as well as a reexamination of those of previously known creatures, are providing researchers with additional insights into ancient vertebrates' move from water to land.
- Animals
Leggiest Animal: Champ millipede located after 79-year gap
A millipede species that can grow up to 750 legs has turned up in California after decades with no sightings.
- Animals
Walking on Water: Tree frog’s foot uses dual method to stick
The tree frog can cling to both wet and dry terrains, despite its permanently lubricated foot.
- Animals
Lobster Hygiene: Healthy animals quick to spot another’s ills
Caribbean spiny lobsters will avoid sharing a den with another lobster that's coming down with a viral disease.
- Ecosystems
Top-Down Lowdown: Predators shape coastal ecosystem
The health of southern California kelp forests may depend more on the ecosystem's predator population than the forest's access to nutrients.
- Animals
True-pal lizards may show odd gene
Colorful lizards in California may offer an example of a long-sought evolutionary factor called greenbeard genes, a possible explanation for altruism.
- Animals
Jay Watch: Birds get sneakier when spies lurk
A scrub jay storing food takes note of any other jay that watches it and later defends the hoard accordingly.
- Paleontology
Remains may be an evolutionary relic
Fossils recently found in southwestern China may be of a lineage that originated long before the Cambrian explosion of biodiversity, when most major groups of animals first appeared in the fossil record.
- Animals
Monkey Business: Specimen of new species shakes up family tree
The new monkey species found in Tanzania last year may be unusual enough to need a new genus, the first one created for monkeys in nearly 80 years.
- Plants
Nectar: The First Soft Drink
Plants have long competed with one another to lure animals in for a sip of their sweet formulations.
- Animals
No Early Birds: Migrators can’t catch advancing caterpillars
Pied flycatcher numbers are dwindling in places where climate change has knocked the birds' migration out of sync with the food-supply peak on their breeding grounds.
