Image of the Day: Scrambled Frog Eggs
Image of the Day: Scrambled Frog Eggs
Cellular innards can reorganize themselves to form structures similar to cells.
Image of the Day: Scrambled Frog Eggs
Image of the Day: Scrambled Frog Eggs

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

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

sperm
Human Testicles Contain Endocannabinoid System Components
Human Testicles Contain Endocannabinoid System Components
Ruth Williams | Sep 19, 2019
Proteins that synthesize, bind, and degrade endocannabinoids are present in the body’s sperm factories, suggesting that the use of cannabis may directly affect them.
Image of the Day: Synchronous Spawning
Image of the Day: Synchronous Spawning
Emily Makowski | Sep 9, 2019
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.
Image of the Day: Motile Swimmers
Image of the Day: Motile Swimmers
Chia-Yi Hou | Jun 12, 2019
Scientists track the movement of sperm flagella.
Image of the Day: Sperm Donors
Image of the Day: Sperm Donors
Carolyn Wilke | Mar 18, 2019
Asexual female nematodes use their male offsprings’ sperm to fertilize eggs, but cast away their genes.
Image of the Day: Self-Insemination
Image of the Day: Self-Insemination
Carolyn Wilke | Feb 1, 2019
Videos reveal how a female squid fertilizes her eggs—one at a time and without spilling much stored sperm.
Image of the Day: The Long and Short of It
Image of the Day: The Long and Short of It
Sukanya Charuchandra | Aug 20, 2018
For flycatchers, the attractiveness of male birds is tied to the length of their sperm.
Researchers Develop Sperm-Robot Hybrids to Deliver Drugs, Assist Fertilization
Researchers Develop Sperm-Robot Hybrids to Deliver Drugs, Assist Fertilization
Diana Kwon | Apr 1, 2018
The artificially motorized cells may one day help fight cancers in the female reproductive tract.
Researchers Cryopreserve Coral Sperm
Researchers Cryopreserve Coral Sperm
Catherine Offord | Feb 1, 2018
A project aims to preserve samples of the climate change–vulnerable animals for future restoration.
Coral Sperm Banker
Coral Sperm Banker
The Scientist Staff | Jan 31, 2018
Mary Hagedorn is racing to save Earth’s coral reefs by developing techniques for freezing the colonial animals’ gametes.