News: the conversation

What’s the point of sex? It’s communication at a biological level

Most people think just one sperm is needed to fertilise a woman’s egg and make a healthy pregnancy. This underpins a common view that all the other sperm – and all the other sex – are surplus to requirements, at least when it comes to conceiving a pregnancy.

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Introduce eggs and peanuts early in infants’ diets to reduce the risk of allergies

In the 1970s, when we were in school, food allergies were rare. But Australian children now have the highest rate of food allergy in the world. Up to one in ten infants and two in ten school-aged children have a proven food allergy.

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