A long-acting contraceptive patch with microscopic needles releases a drug slowly over time.

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.

Researchers collected trash that washed up at Gulf Coast shoreline sites over two years. Most of it was plastic.

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

A newly developed underwater ultrasound reveals a fetal shark swimming between the two uteri of its mother.

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