Healthy Sperm

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Sperm has fooled scientists for centuries: they don't 'swim', they move with as its tail 'spins'
science

Sperm has fooled scientists for centuries: they don't 'swim', they move with as its tail 'spins'

Sperm 'drills' into the fluid like a spinning top by rotating around itself whilst its tilted axis rotates around the centre.

Semen frozen for 50 years used to breed 34 healthy lambs in breakthrough study
science

Semen frozen for 50 years used to breed 34 healthy lambs in breakthrough study

Amazingly, the sperm resulted in birth rates comparable to semen frozen for 12 months.