The disappearance of their predators in a disturbed ecosystem has turned Atlantic forest sloths from night creatures to day adventurers.
Researchers seeking evidence for cancer in dinosaurs found it in a collection of bones at a paleontology museum in Alberta.
The finding of a baby dinosaur fossil in the Arctic implies that some dinos nested in the region, which was milder than today but not toasty.
Rather than undergoing active chameleonlike color changes, glass frogs’ translucency allows light to bounce from their background and go through them—making their apparent color close to their setting...
Now submerged caves in the Yucatán Peninsula contain remains of ocher-mining operations that date back at least 10,000 years.
The sword-tailed cricket can discern bats’ echolocation signals by only responding to calls of a certain volume—at which point it plummets out of their approach.
The Silent Cities project is collecting sound from cities around the planet during the coronavirus pandemic to give researchers a database of natural sound in areas usually filled with human-generated noise...
The geese are wintering farther and farther north, in urban areas like Chicago—which may help them avoid hunters. Emily Schwing reports.
New beaver ponds in the Arctic may contribute to the destruction of the permafrost that holds that landscape together.
A social scientist studies how car stickers turn the roads into actual information highways.
Researchers attached cameras to humpback whales and found that they flap their flippers to help power forward swimming.
Salmon excavate streambed holes in which to lay eggs, setting off a chain of events that has surprisingly large geographical effects.
Cannibalistic caterpillars prevent disease from decimating their populations by removing infected individuals. Emily Schwing reports.
A petroglyph spotted in Chaco Canyon may depict a total solar eclipse witnessed by the Pueblo people.
Sea ice is drifting faster in the Arctic—which means polar bears need to walk farther to stay in their native range. Emily Schwing reports.
DNA analysis of skeletons found in the Pacific Northwest backs up traditional oral histories, and suggests there could have been more than one colonization of the Americas. Emily Schwing reports...
Ecologists say wolves should be allowed to roam beyond remote wilderness areas—and that by scaring off smaller predators like coyotes and jackals, wolves might do a good service, too...
With 700 new greenhouses, Alaska is growing its own produce as deep into winter as the sun keeps rising.
A Pacific Northwest housing boom is encroaching on songbird habitat, forcing the birds to flee their homes—and their mates.
Birds of prey work where other traditional methods of bird abatement—like scarecrows, pyrotechnics and netting—fail. Emily Schwing reports.