Groups of corals release all of their eggs and sperm once a year, but the timing of their spawning is under threat from climate change.

Insect eggs can take any shape at almost any size, refuting explanations for their dimensions based on geometric scaling laws or on relationships between egg traits and adult traits.

The awards for comical but practical scientific discovery also include cannibalism and self-colonoscopy.

Osprey numbers are recovering after a drop in contaminants in the Delaware Estuary.

Bigger, older mothers produce disproportionately more eggs than their smaller counterparts do.

A new 3-D model plumbs the molecular intricacies of eggshell composition.

The studded cells belong to a newly discovered species of water bear, Macrobiotus shonaicus. 

Mary Hagedorn is racing to save Earth’s coral reefs by developing techniques for freezing the colonial animals’ gametes.

The fossil booty includes some eggs with embryo remains inside, and points to group nests involving long-term parental care.