Sperm: 15 Crazy Things You Should Know

When it comes to sperm, people always seem to have an agenda. 

Some want to kill sperm cells. Some want to buy or sell them. Some fret over their failure to get the job done. 

Why can't we just appreciate sperm for the amazing little wrigglers that they are? After all, without sperm, the world would be a very lonely place.

So here are 15 fascinating facts about sperm, from Dr. Craig Niederberger, professor of urology at the University of Illinois at Chicago.