Image of the Day

Researchers hacked the genetic machinery of E. coli to make them glow and identify proteins linked to cancer.

The lay of the land shapes the diversity of groundwater-dependent salamanders.

Inhalable particles carrying mRNA make mouse lungs glow.

South American hummingbird males were caught on camera poking and pinching each other with bills adapted for fighting.

At playtime together, parents’ brain activity mimics that of their infant children.

Researchers used infrared light to relieve itchy mice.

A study of tiny monkey skulls and teeth suggests that shrinking body size didn’t crowd out wisdom teeth during evolution.

A bright blue stain highlights the sensory nerves of a developing mouse embryo.

Scientist D. Allan Drummond’s study of life in sculpture aims to provoke curiosity and wonder about the world.

A 37-year-old simiang gibbon on birth control unexpectedly gave birth at the San Diego Zoo.