Testes are heat-sensitive, motion-triggered – and smarter than you probably give them credit for.
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Semen, sperm, pre-cum, seminal fluid. These terms are sometimes used interchangeably – here’s the difference.
Some viruses can hide out in the body and reemerge at later times. Which viruses do this, and can the new coronavirus do this too?
Disorders affecting penis development are among the most common birth defects seen in humans, and rates are on the rise.
There are many cultural and social factors involved in making a baby into a man or a woman. But biologically speaking, sex starts when you’re just a tiny group of cells in your mother’s uterus.
We have the penis of a monogamous primate yet our body sizes suggest our ancestors slept around a lot.
Men with Klinefelter’s syndrome are infertile, as the extra X chromosome affects the ability to produce sperm.
Top contributors
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Associate Professor, Department of Epidemiology and Preventive Medicine, Monash University
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Professor of Earth System Science, UCL
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Jenny Graves is a Friend of The Conversation.
Distinguished Professor of Genetics and Vice Chancellor's Fellow, La Trobe University
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Associate Professor and Deputy Scientific Director Research at Monash IVF, The University of Melbourne
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Professor of Medicine, University of Virginia
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Professor, School of BioSciences, The University of Melbourne
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Associate Professor of Medical Sciences, University of Wollongong
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Senior Lecturer, School of Psychology and Neuroscience, University of Bristol