One day in 1677, Dutch businessman and scientist Anthonie van Leeuwenhoek made love to his wife, scooped a sample of his semen from out of her, and placed it in one of his self-made microscopes. He was the first man on Earth to see wriggling sperm cells, describing them as “animalcules … moving like a snake or an eel swimming in water.” Van Leeuwenhoek is famous for developing a painstaking and closely guarded secret process for producing the spherical glass lenses he used in his microscopes, a feat that earned him a place in the British Royal Society – even… This story continues at The Next Web