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Nathan K. Long is a Participant in the 2024 Quantum Explained Challenge put on by the Australian Institute of Physics, Cosmos and Double Helix Extra. This entry impressed our panel of expert judges for making a quantum concept clear to a middle school audience in less than 250 words.

Our Microscope column answers the most intriguing science, tech, engineering and maths queries you can throw at us. So, why do voices sound so different on voice recordings?

When astronomers first looked at the Moon through telescopes, they thought they were seeing great oceans. They gave the Moon’s big, dark patches names such as Oceanus Procellarum, and the Sea of Tranquillity. Now we know that these ‘seas’ are ancient lava flows, and that the Moon’s surface is very dry. It’s also airless.

A famous person built a square house so that the windows on all four sides look south. Where is this house? (And can you name the famous person?)

This year, we designed and tested a whopping 22 hands-on STEM activities! Here’s a roundup of the five most popular to keep you busy all summer.

How do insects choose their favourite weed? Scientists hoping to control weeds want to know if these insects will eat other plants or only their absolute favourite weed.

Have you ever wondered how water striders can walk on water? Wonder no longer!

From unstoppable scientists to terrifying natural phenomena, we’re taking on forces of nature. Naturally we hope you get a 5/5, but don’t force it!

The warm weather is perfect for a cool meal! Ceviche (suh-VEE-chay) is a popular dish from Central and South America that relies on lime juice to “cook” seafood without any heat.

Farmer Doolittle has a farm with just cows and chickens. The farmer counts up all the animals and discovers that there are 43 heads and 120 legs on the farm (not counting the farmers). How many cows live on farmer Doolittle’s farm?