Several feet below a beach in British Columbia, archaeologists discovered soil trampled by human feet—the oldest footprints found so far in North America. Christopher Intagliata reports.
To learn more about decay and fossilization, researchers conduct unorthodox experiments—like dissecting decomposing animals in the lab. Christopher Intagliata reports.
Ravens produce different types of calls depending on their age and sex—which might help ravens size up other individuals. Jason G. Goldman reports.
Our planet may have gained breathable air in the geologic blink of an eye
The legendary cartoonist highlights Earth’s most vulnerable species, using his lavish, eccentric style
The whipworm lives in the human gut, mooching microbes from its host to build its own microbiome. Christopher Intagliata reports.
Physicists have long sought to find one final theory that would unify all of physics. Instead they may have to settle for several
Adrenaline-fueled studies of the bite forces of crocodiles and their relatives reveal secrets of the group’s evolutionary success
Nomadic horse riders likely opened a “steppe bridge” between Europe and Asia, but recent genetic data raise more questions
People who use echolocating mouth clicks to compensate for low vision increase the number and intensity of clicks when objects are harder to detect. Christopher Intagliata reports.
The cinnabar moth caterpillar's coloration pattern warns predators close up, but camouflages the critter from a distance.
Researchers are analyzing dialects and historical records to unravel the formation of a Creole language
They probably experienced dental abrasion similar to what is found today from eating tough and surprisingly acidic fibrous foods
This micro-creature was found on a small piece of moss in Japan
A study of 22 different types of lichens revealed 10 included fungi that had lost a gene for energy production, making them completely dependent on their algal partner.
The work hinged on DNA from a museum specimen
The dietary practice coincided with increases in brain size, evidence suggests
Recordings of songbird duets reveal baby birds learn conversational turn-taking like we do: gradually, and from adults. Christopher Intagliata reports.
Abstract images in Spanish caves date back 65,000 years—millennia before Homo sapiens set foot in Europe—settling a long-running debate over Neandertal cognition
The bloodsuckers lose their appetite for attractive scents when they associate those aromas with a likelihood of being swatted. Karen Hopkin reports.