Most men don’t know the normal size of testes.
Men with Klinefelter’s syndrome are infertile, as the extra X chromosome affects the ability to produce sperm.
Sexual competition has made sperm the most diverse - and fascinating - cells in the animal kingdom.
Understanding how evolution affects behaviour can help address societal problems.
Evolution also does not claim humans evolved from primates. Neither does it say non-human primates, including monkeys, baboons, chimpanzees and gorillas, will evolve into humans with time.
Should parents be allowed to select the sex of their child through IVF when there’s no compelling medical reason to do so?
The National Health and Medical Research Council call for public submissions on whether sex selection should be allowed without a medical reason recognises changing social attitudes.
Thanks to IVF and donor conception, infertile couples, single women and lesbian couples now have a better chance at starting families. But how does it all work? Ask the experts here.
Sometimes the audience can be a font of illuminating questions.
I sometimes forget that people can feel embarrassed listening to me talk about my research on sperm. But often those same people can also be a source of amazement and inspiration.
If proposed Victorian laws are enacted, they will be a world-first for donor-conception.
Historically, donors were told it was best they were anonymous, while recipients were told it was best not to tell their child.
Humanity on ice.
Freezing young men's sperm might remove worries about them fathering children in later life, but do we really want the state routinely meddling in conception?
‘I did it, darling!’
Fertility, as with contraception, is seen as a woman's issue, but the science shows this needs to change.
“Mummy says you should have gotten a move on.”
Calls to freeze every 18-year-old's sperm might be drastic but men need to realise it's a myth that there's no limit to their fertility.
Gird your loins.
Recent research into the health effects of the plastic-making chemicals phthalates has reignited concerns about low sperm counts. But the evidence is far from conclusive.
When cells divide, sometimes chromosomes don’t wind up where they need to go.
Embryo via www.shutterstock.com.
Aneuploidy – when a cell has an irregular number of chromosomes – is a major cause of pregnancy loss. Scientists may have uncovered a gene that increases the risk of aneuploidy.
Russian model Irina Shayk is sure to turn heads off the pitch … but will boyfriend and Portuguese striker Cristiano Ronaldo be able to keep his mind on the game?
While watching their national teams play in the World Cup, spectators may have their attention drawn away from the “beautiful game” on the pitch to the beautiful people off the pitch – the footballers…
A species of ant has evolved sperm that bundle together to increase their swimming speed. Researchers from Université Libre…
Men who are infertile because of semen abnormalities may have an increased risk of premature death, according to new research…
Preserved sperm in a shrimp more than 16 million years old has been discovered in Queensland. The finding marks a breakthrough…
Obese fathers increase the risks, through their sperm, of their children and grandchildren inheriting their health conditions…
Sperm quality is determined from factors as early as the foetus stage of life, according to an international study. The study…
A father’s health prior to conception is just as important as the mother’s and has a serious impact on their child’s health.
As a society, we put a significant emphasis on women’s health both immediately prior to and during pregnancy – and rightly so. A woman needs to prepare her body for the arduous nine months of gestation…
Those who know the identity of their donor from a young age are less likely to experience psychological problems.
University of Tasmania academic Meredith Nash recently argued on The Conversation that women who donate their eggs for fertility treatments should be financially compensated. It’s a risky and time-consuming…