Reproduction
It's instinctive to avoid unnecessary activity, says academic
Harvard professor of human evolutionary biology and author of the new book, Exercised, Daniel Lieberman explains how we evolved to be physically active, but we never evolved to do physical activity… Audio
The evolution of human fatherhood
Human fathers put more time and energy into rearing their offspring than most other mammalian dads. Dr Lee Gettler is an anthropologist who focuses on fathering and the biology of fatherhood. He's… Audio
Study shows dairy milk 'associated with breast cancer risk'
A new study conducted by researchers at Loma Linda University Health has associated consumption of dairy milk with a greater risk of breast cancer in women. New Zealand Professor Gary Fraser was the… Audio
Safe sex talks, unhatched chick bonds and stickier plaster
Science correspondent Siouxsie Wiles joins Kathryn to talk about a new study which suggests having the sex talk with your kids won't delay them having sex - but it's more likely to be safe. Unhatched… Audio
Alarming new research on falling sperm counts
Kathryn Ryan talks to epidemiologist, Hagai Levine, about new research on falling sperm counts around the world, and what it could mean for humanity. Dr Levine says the results of nearly 200 studies… Audio