When NASA classified Karl as non-astronaut material in 1981 he walked straight into ABC Radio station Double J and offered to talk about the space shuttle launch. They said "okay" and his media career took off from there. More than 35 years later you'll find him on triplej every Thursday morning with Zan Rowe. He also has a weekly podcast, Great Moments in Science, and appears regularly on ABC Local, News24 and the BBC.
Dr Karl is also the author of 40 books, the winner of an IgNobel Prize for his work on belly button fluff, and one of Australia's 100 National Treasures. He even has an asteroid named after him — Dr Karl/18412!
Frequently-touched surfaces like door handles, taps and handrails could disinfect themselves if they were made of copper. But what’s the science behind this?
Topic:Explainer
The 5G mobile network is coming, and some people are very worried about it. Dr Karl Kruszelnicki explains why it won't give you cancer.
Is the active ingredient in cannabis the next big thing for treating memory loss? Not so fast, says Dr Karl.
Many scientists believe life on Earth evolved in what's dubbed a 'primordial soup'. But a new hypothesis is that it life began on the longest mountain range on Earth, that is so far under the water it's invisible to most of us.
Just about everything that happens before you're six gets forgotten. Dr Karl looks at just why that might happen.
In 2014, Russian criminals turned the tables on American casinos when they worked out how to beat the poker machines — thanks to Vladimir Putin and mathematics. Dr Karl Kruszelnicki explains how they did it.
Recent headlines are wrong. Not all creatures take exactly the same amount of time to poo, but they come pretty close — and now we know why.
There's a lot of maths — and a bit of astronomy — behind the sideways swing of a ponytail, says Dr Karl Kruszelnicki.
Air pollution doesn't just look and smell bad, it kills. And it costs megabucks. Dr Karl Kruszelnicki unpacks the impact of the great VW emissions scam, and more.
Cannibalistic behaviour has been observed in many animal species — and, for most of history, in humans as well. What changed?
It's a phenomenon known as superfetation, and while it's rare, it can happen.
There's 60 years of space junk floating around the earth's orbit crashing into itself. How do you clean it up?
Dr Karl Kruszelnicki sifts through the trash to unpack just how much space junk is floating around us — and how it got there.