Seattle coyotes live at nine times the density of Washington's wild lands, with fewer predators, fewer hunters, and far more ...

Lions and hyenas are famous rivals, but GPS collars show much of their competition happens without a confrontation.

Scientists found that Mercury's roughest terrain may conceal ancient cliffs, suggesting the planet shrank substantially more than estimates showed.

Warming-induced emissions from permafrost, wetlands, and wildfires could add up to 0.7°F by 2100, and most climate models leave them out.

Nine touch sensors let a perching drone grip a branch it cannot see, holding on even when the camera's guess is 2 feet off.

RNA droplets can concentrate the molecule with no membrane at all, and a single oxygen atom sets how much heat it takes to ...

Plateau pikas labeled as pests can actually help livestock gain more weight by keeping poisonous weeds from taking over ...

Legionnaires' disease cases rose sixfold in two decades, then fell when the pandemic cut driving. One researcher suspects ...

A bacterium in the human urinary tract can convert a steroid made by the body into testosterone using two newly identified ...

Rising sea levels threaten shorebird habitats, especially where roads and buildings prevent coastal wetlands from shifting ...

Extreme heat seasons are stretching into spring and fall across much of the world, and warming alone does not explain the ...

Researchers discovered that while soil determines which bacterial species inhabit the root system, the host plant ultimately ...