In the new documentary Sizing Up Sperm airing Sunday night, National Geographic tells the story of reproduction in a strange new way. "In it, people dressed in all white literally act out the role of sperm in the race to become one with the egg, running through valleys, squeezing through spirals, battling Leukocytes and much more," writes Laughing Squid. The show airs Sunday night at 9 p.m. Eastern on the National Geographic Channel.
