Paleontology
Frozen squirrel poop hints at sights and smells of Ice Age ecosystems
DNA preserved in ancient scat reveals what Yukon ground squirrels ate and what animals shared their world.
DNA preserved in ancient scat reveals what Yukon ground squirrels ate and what animals shared their world.
We summarize the week's scientific breakthroughs every Thursday.
A mathematician found the most efficient way to fold paper into a doughnutlike shape.