Evolution

Ichthyosaurs had traits in common with turtles and modern marine mammals, like blubber and countershading camouflage. Christopher Intagliata reports.

When trouble lurks, juvenile aphids drop off of the plants they're eating and hitch a ride on bigger aphid escapees.

An estimate of dog intelligence requires looking at non-dogs as well to understand what's special to canines and what is just typical of the taxonomic groups they're in.

The ultimate goal is to inform efforts to conserve or repair heritage sites

Cephalopods on the recreational drug behave much like humans do, even touching and hugging their peers

A supervolcano may be brewing underneath Chile, with a cold interior that is upending ideas about triggers of huge eruptions

The specimens, which went unstudied for nearly seven decades, show adaptations to high elevation

A new technique for identifying tiny fragments of fossilized bone is helping to answer key questions about when, where and how human species interacted with one another

In the last few decades blue whale calls have been getting lower in pitch—and a rebound in their numbers may be the reason. Christopher Intagliata reports. 

A unique anatomical setup helped some herbivorous dinosaurs crunch through their Cretaceous world

Scientists scramble to analyze data from the eruption of Kilauea, hoping to predict similar events elsewhere

New study finds that canines are not exceptional in the animal world