A carnivorous caterpillar discovered on the Hawaiian island of Oahu adorns its silken protective case with the body parts of insect prey. This macabre coat helps them hide from spiders, whose webs make up the caterpillars’ hunting grounds. Bone collector caterpillars are also cannibals and will eat their fellow species!

For the first time, high-resolution time-lapse videos show how live plant cells build their cell walls. The cell wall's primary component — cellulose — glows thanks to a molecular probe.

Two American astronauts returned to Earth after a longer-than-planned stay aboard the International Space Station. Now they'll undergo a bunch of tests to see how the spaceflight affected their health.

Narwhals in the Canadian High Arctic may be the first to have been recorded while playing.

The ancient people of Chaco Canyon may have hauled logs with head straps to build massive stone houses. So, two scientists gave it a try.

Yi Zuo, professor of Molecular, Cell and Developmental Biology at UC Santa Cruz, speaks about her research on how experiences, such as stress, affect brain connectivity and how the change in the brain’s connection and functions feed back to influence behavior.

In this video, McKenzie Prillaman describes the concept of cognitive flexibility.

An introduction to the AAAS Dialogue on Science, Ethics, and Religion Program.