Dr Karl: Need to Know
A Stonehenge puzzle solved
One of the many mysteries of Stonehenge – where its Altar Stone came from – has recently been solved by Australian scientists.
Category: Dr Karl: Need to Know
Dr Karl: Need to Know
Indigenous Ice Age exodus
Today, all traces of where inhabitants once lived now lie beneath the waves.
Dr Karl: Need to Know
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!
Dr Karl: Need to Know
Dr Karl: Renewables and agriculture can coexist
Electricity and agriculture is not an ‘either/or situation’, argues Dr Karl.
Dr Karl: Need to Know
Dr Karl: ‘Nothing will convince the flat-Earthers’
In November 2023, SpaceX launched its second Starship rocket test flight. This was the heaviest, tallest and most powerful rocket ever built and – not unexpectedly – it didn’t work.
Dr Karl: Need to Know
The Varroa mite is here to stay
After spreading through most of Earth’s honeybee populations, the parasite known as the Varroa mite (Varroa destructor) recently got a foothold in Australia and has begun devastating our own bees.
Dr Karl: Need to Know
What is an ocean avalanche?
Avalanches are terrifying things: they career down snow-covered mountains, smashing everything in their paths.
Dr Karl: Need to Know
Sniffing out Parkinson’s disease
We know of one (that’s correct, only one!) person able to smell Parkinson’s disease, before the symptoms became visible some 14 years later.
Dr Karl: Need to Know
Neanderthal DNA kills superbugs
Proteins found in ancient Neanderthal DNA might help fight modern antibiotic resistance.
Dr Karl: Need to Know
At this exact time every year more than 90% of the world’s population are in sunlight
On Reddit, I came across the following statement: “Every year on 8 July at about 11.15 Coordinated Universal Time (UTC), approximately 99.164 per cent of the world’s population is between dawn and dusk.” Amazingly, it turns out to be only 6 per cent wrong!