the sperm race

The Great Sperm Race (Human Anatomy Documentary) | Spark

With 250 million rivals, it is one of the most extreme race on planet as well as there can only be one victor. First Broadcast In 2009. Material Provided By ITV Global. Any Queries Please Contact United States at hell@littledotstudios.com Subscribe to Spark for more incredible scientific research, tech and also engineering video clips – …

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