Why does hair turn grey when we age?

#053 Rebroadcast This week, Melissa and Jam revisit one of their fav episodes on the topic of mosquitos. What is DEET? What part does it play in repelling mosquitos? How do repellants repel mosquitos in the first place? Is it just straight witchcraft? Let's do it. Support this po ...  Show more

Birds fly all the time. We see it constantly. But how does it actually work? Is it just "Bernoulli’s" principle? Is the air pushing up? Are the wings pushing down? And what’s happening at the molecular level when a bird takes off? Let’s talk about feathers, airflow, collisions be ...  Show more

Discovering your first grey hair can be quite the shock. After all, it marks the onset of an irreversible change. And the fact that it’s a natural process is often of little consolation.  The culprits, if you want to think about it like that, behind our hair turning grey are the ...  Show more

This episode looks at the science of hair – what is it made of, why does it come in different shapes, and why does it go grey when we get older? Matilda is a science writer at the Royal Institution of Australia’s Cosmos Magazine with a background in bioethics and microbiology. Sp ...  Show more

Hair is an important part of our identities – straight, frizzy, long, not there at all – and our efforts to keep it styled and clean have created an $80 billion hair care industry. Many products offer to improve the life of the stuff on our heads, but isn't it all just dead pr ...

Why does human hair go grey and is it ever possible for it to go white overnight from shock? Hannah and Adam explore why hair goes grey, how much stressful life events and a lack of sleep can speed up the process. They hear from the pilot whose hair turned white after a flight wh ...  Show more