Key protein in sperm tail assembly identified

A study published in the Journal of Cell Biology focuses on the development of the sperm tail, the structure that enables sperm cells to swim and is therefore critical for male fertility.

Hard whale heads sink ships—or can they?

The idea that a sperm whale can use its massive head as a battering ram to sink ships has been hotly debated at least since Moby Dick was published in 1851.

Putting the squeeze on sperm DNA

(PhysOrg.com) -- In the quest for speed, olympic swimmers shave themselves or squeeze into high-tech super-suits. In the body, sperm are the only cells that swim and, as speed is crucial to fertility, have developed their ...