Paleontologists find tracks from a four-footed animal thought to be of an Ichniotherium species in the Grand Canyon.

The roots of plants exposed to the hormone β-cyclocitrical grew faster than roots not treated by the hormone.

Telomeres in cancer cells exposed to oxidative stress got shorter and stickier.

Snails with a gene knocked out by CRISPR grow with their shells coiling in the opposite direction.

A 3-D simulation shows corals growing into a community.

Scientists create an atlas of Arabidopsis cell and tissue reconstructions in three dimensions.

Microrobots kill bacteria and clean surfaces covered in biofilm.

Fossils of two dinosaur skeletons found in New Mexico are from a species new to science that lived 92 million years ago.

Scientists map the presence of Helicobacter pylori in the stomach of mice, showing where the bacteria colonize the gastric glands.