A Child is Born: Photographs of the foetus developing in the womb, by Lennart Nilsson

When Lennart Nilsson's pictures of developing embryos were published in Life magazine in 1965, they caused a sensation. Within days, the entire print run of eight million had sold out. More than 40 years later, the photographs have lost none of their power

Five weeks. The embryo is approximately 9mm long. A face develops, with openings for the mouth, the nostrils and eyes

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