The asteroid impact that slew the dinosaurs may have also indirectly sculpted the largest ripple marks ever found on Earth. A series of ridgelike structures more than three stories high and...

When news broke that the oldest known case of a person killed by a shark involved a member of Japan’s Jōmon culture around 3,000 years ago, two researchers took special notice (SN: 7/23/21)...

When parasitic wasps come calling, some caterpillars have a surprising ally: a viral infection.  Insects called parasitoid wasps lay their eggs inside young moth larvae, turning the caterpi...

Next time you’re looking at a rainbow, be thankful you’re not a tardigrade. While the microscopic creatures, also known as water bears, are master survivors when it comes to radiation, spac...

Pale, wormlike tubes in 890-million-year old rock may be ancient sea sponges, a new study concludes. If confirmed, that controversial claim would push back the origin of the earliest sponge...

Walruses, weighing as much as 1,300 kilograms with huge tusks and nearly impenetrable skulls, are almost impossible for a hungry polar bear to kill. But new research suggests that some pola...