Brainteaser: Slicing cheese
Difficulty: Fun Kim has a big round cheese, and an even bigger knife. With three straight cuts, what’s the largest number of pieces she can cut? Need a hint? You can draw the cheese as a circle on...
View ArticleBig things – A quick quiz
Think you know some big facts? Try this quiz and see if you can post a big score! QUIZ START The post Big things – A quick quiz appeared first on Double Helix.
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Forever chemicals create long-lasting effects on turtles
A freshwater turtle (Emydura macquarii macquarii) in Queensland. Credit: CSIRO Over three years, the team captured and released 350 freshwater turtles. Credit: CSIRO A ground-breaking new study has...
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Can Australia become a renewable energy superpower?
The Nyngan Solar Plant in rural NSW is one of the largest solar farms in Australia. Credit: Getty Images/Andrew Merry Australia’s Renewable Energy Agency (ARENA) recently launched its $100 million...
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Chew like a dinosaur
In this activity we are going to take a look at how some dinosaurs may have digested their food. A dinosaur that chewed with gastroliths. Credit: Wikimedia Commons/A. Atuchin CC BY 4.0 You will need A...
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Clap louder, with science
Scientists used baby powder to see what happens to air when we clap. Credit: Rebecca Bowyer, Cornell University We clap to get people’s attention, to say “congratulations” and even to make music. But...
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Ancient galaxies glimpsed in first image from the world’s largest radio...
Each one of these bright dots is a galaxy. Credit: SKAO CC BY 3.0. Focussing on a patch of sky covering roughly the same area as 100 full moons, the Square Kilometre Array (SKA) radio telescope in...
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Make twin pendulums
Can you make a string swing without touching it? We’ll show you how in this simple physics experiment. You will need String Scissors Two chairs Handful of plasticine Safety This activity requires the...
View ArticleBrainteaser: Lost code
Difficulty: Fun Alice forgot the code to get into her computer. She knows it was a number with three digits. All she can remember is that the first digit is the second digit minus 3. The second digit...
View ArticleAll over the Universe – A quick quiz
From tiny viruses to the oldest of stars, everything science-y is on-topic in this quiz. Can you get a 5 out of 5? We think you’re all over it! QUIZ START The post All over the Universe – A quick quiz...
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Homemade ice magic
The chocolate season is here! Why not try a bit of clever chemistry to enjoy a bit of ice cream before the weather chills too much? In this delicious experiment, we combine different ingredients to...
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Fossilised wasp found with a flytrap for a bum
The newly discovered wasp was found in amber. The head is on the left and the bum flaps are on the right. Credit: Qiong Wu CC BY 4.0 Catching prey can be a real chore when you’re a parasitic insect...
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Interview with the creators of Caution! This Book Contains Deadly Reptiles
This book is published by Allen & Unwin. In April, Double Helix reader, Owen Bardell, got the chance to write a review for a new book called, Caution! This Book Contains Deadly Reptiles by Corey...
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