Great frigatebirds may stay in flight for up to two months, eating and sleeping on the wing.
Scant cortisol levels in mummified locks change ideas about pre-Hispanic Chile natives
Bones from the animals people ate—or didn’t—offer a glimpse into the daily lives of ordinary Maya outside the ruling class
A model of the dolphin vocal apparatus shows that they need a coating of mucus to produce their distinctive sounds.
Like its distant relative T. rex, a newly identified dinosaur, named Gualicho shinyae, sported small arms and hands with two clawed fingers
The discerning insects returned to flowers with sweetened pollen, but avoided revisiting flowers with bitter pollen. Christopher Intagliata reports.
Fossil finds in China are challenging ideas about the evolution of modern humans and our closest relatives
The National Center for Science Education's annual Colorado River trip through the Grand Canyon highlights the differences between the scientific and creationist outlooks.
A lubricating gland behind the “sword” may help explain the swimming mechanics and speed of the enigmatic fish
Old monkeys, like old humans, would rather not make new friends
Some urbanite moths have evolved to avoid lamps—but is the adaptation beneficial?
Kenneth Catania of Vanderbilt University talks to Cynthia Graber about electric eel research that led him to accept 19th-century naturalist Alexander von Humboldt's account of electric eels attacking horses.
Social spiders in artificially assembled groups of all bold or all shy members fared less well against predators than a group with some shy and some bold members.
In the first known example of a mutualistic relationship between two mammal species in which neither is a primate, mongooses feast on ticks and other parasites infesting warthogs.
A study of 44 ancient genomes supports the idea of independent farming revolutions in the Fertile Crescent
A lizard's stripes may make them look like they’re moving slower than they really are, confusing predators that tend to aim at the head but may wind up with the tail.
Space lasers developed in the 1970s are being put to a brand-new use
Wildlife researcher Joel Berger dons a polar bear outfit to study the reactions of musk oxen to the threat of bears increasingly driven onto the land for food.
The young of red-backed fairy wrens emerge from their eggs mimicking mom’s tune
700,000-year-old remains from Indonesia could elucidate the murky origins of the “hobbits” in our family tree