Dr Karl: Need to Know
Dr Karl explains the ‘Wobbling Scale’ of animal drunkenness
Surprisingly, rotting fruit can ferment and reach a level of 4 per cent alcohol – close to, but not quite, the 5 per cent of beer.
Tag: Dr Karl Kruszelnicki
Dr Karl: Need to Know
What are atmospheric rivers?
Although they’ve been around for millennia, atmospheric rivers were only discovered by humans during the past 25 years.
Dr Karl: Need to Know
A quick guide to help you understand coral bleaching
Here, Dr Karl explains the number one problem facing our Great Barrier Reef: coral bleaching caused by climate change.
Dr Karl: Need to Know
The science behind the tides
There are about 120 different possible tides each day. There are tides that happen once a day, twice a day, three times a day, four times a day, and so on.
Dr Karl: Need to Know
Dr Karl: The truth about Uluru
The phrase ‘world’s largest monolith’ makes a nice story for tourists visiting Australia’s iconic Uluru. Just don’t say it near a geologist.
Dr Karl: Need to Know
Why does your dog wag its tail?
Dr Karl uncovers the curious hidden meanings behind your dog’s tail wagging.
Dr Karl: Need to Know
Killer heat waves
Dr Karl investigates the growing global trend of heat waves, which have killed more Australians than all other natural disasters combined.
Dr Karl: Need to Know
The thorny devil lizard’s drinking habits
How the thorny devil takes “flat out like a lizard drinking” to the extreme.
Dr Karl: Need to Know
The Australian pedestrian button
Dr Karl’s ode to the ergonomic and elegant design of the pedestrian button.
Dr Karl: Need to Know
The Fred Hollows Foundation’s Arclight
Dr Karl looks at how the Foundation’s portable and cheap ophthalmoscope is helping save lives and prevent avoidable blindness across the developing world.