Nature & Wildlife
Killer cat stats
A crunching of the numbers reveals some extremely sobering facts about the carnage caused by feral cats in Australia.
Tag: Dr Karl Kruszelnicki
Need To Know with Dr Karl
Indigenous Ice Age exodus
Today, all traces of where inhabitants once lived now lie beneath the waves.
Need To Know with Dr Karl
Drunk from the inside: Dr Karl explains rare auto-brewery syndrome
Amazingly, some people can manufacture alcohol inside their body from the food they eat – carbohydrates, to be specific. Some do it so well, they can raise their blood alcohol level to eight times the legal driving limit!
Nature & Wildlife
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.
What are atmospheric rivers?
Although they’ve been around for millennia, atmospheric rivers were only discovered by humans during the past 25 years.
Need To Know with Dr Karl
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.
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.
Need To Know with Dr Karl
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.
Why does your dog wag its tail?
Dr Karl uncovers the curious hidden meanings behind your dog’s tail wagging.
Climate
Killer heat waves
Dr Karl investigates the growing global trend of heat waves, which have killed more Australians than all other natural disasters combined.