How a sperm and an egg fuse together has long been a mystery. New research by scientists in Austria provides tantalizing clues, showing fertilization works like a lock and key across the animal ...

It's a commonly held belief: Sperm cells are like runners in an epic race, competing against each other for access to the coveted egg at the finish line. The egg, in turn, waits patiently for the ...

We often imagine sperm as swimmers, tiny cells whipping their tails to power through fluid on a mission toward the egg. However, a new discovery from Monash University researchers reveals a far more ...

(CNN) — Talk to a group of 100 people born in the United States, and chances are two of them were born as the result of in vitro fertilization, said Dr. Zev Williams, director of the Columbia ...

On Jan. 1, large group health insurers in California — from employers with at least 100 workers — will be required to begin ...

In a weird and wacky finding, scientists have discovered the limit to how many times a strange fish can have sex in a single day. These fish, named medaka or Oryzias latipes, were found to be able to ...

Dr. Harold Burstein answers the question: 'Freeze My Eggs Before Chemotherapy?' — -- Question: Should I consider having my eggs frozen for future fertilization if I am having chemotherapy ...