Enforcement of the Endangered Species Act will be altered, easing protections for the most critically threatened plants and animals.

Maternal care for the fish alters the structure of their developing heads.

See a developing Drosophila eye.

The extremely rare event, thought to be caused by two sperm cells fertilizing the same egg simultaneously, was last reported in 2007.

The same network of transcription factors may be responsible for both cleft palate and neural tube defects, according to a new study connecting mouse and human data.

A compound produced by Pseudomonas aeruginosa activates signaling pathways that prevent seeds from growing in unfavorable environments.

The Indiana University professor was known for his research on the evolution of organismal development.

Inhibiting nerve cells that produce the neurotransmitter made it harder for baby mice to recover from bouts of slowed breathing.

Children born to moms who smoked or ingested marijuana during pregnancy suffer higher rates of depression, hyperactivity, and inattention.