Eggs from girls and from older women show higher rates of errors in chromosome number.

Cellular innards can reorganize themselves to form structures similar to cells.

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.

The unborn chicks translate auditory alarms from adult birds into quaking vibrations.

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.

An investigation of fossilized teeth reveals that some dinosaurs took more than six months to hatch, hindering their abilities to procreate quickly and efficiently.

Egg and peanut consumption during infancy is linked to lower risk of allergy to those foods later in life, according to a meta-analysis.

Lab Girl, The Most Perfect Thing, Half-Earth, and Cosmosapiens

In response to speculation that groups have edited the DNA of human embryos, researchers request that gene editing of human reproductive cells be halted.

From stem cells, scientists generate early egg- and sperm-like cells in vitro.

A round-up of recent discoveries in behavior research

Seabirds can serve as indicators of pollution.