Feature
- Earth
Uncharted Territory
Ultraslow-spreading undersea ridges are giving oceanographers fresh insights into how Earth's crust forms.
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Thugs and Bugs
With some laboratory detective work, scientists are discovering how various pathogens interact with their targets.
- Animals
That’s One Weird Tooth
The narwhal's distinctive spiral tusk has structures that could make it phenomenally sensitive, raising new questions about its functions.
- Materials Science
Making the Most of It
A recent crop of studies demonstrates how nature finds strength in unlikely places.
- Paleontology
Out of the Shadows
An ongoing flurry of fossil finds is triggering a reevaluation of how early mammals and their close kin eked out an existence during the Age of Dinosaurs.
