By David Shaw, 10 December 2024
Here are eight 8s, 8 8 8 8 8 8 8 8. Put some plus signs in there to make 1000.
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By David Shaw, 9 December 2024
2024 is winding to a close and 2025 is just around the corner. What better way to celebrate than with a science quiz! This quiz contains (almost) all of the science trivia questions featured in Double Helix Extra throughout 2024. There’s over 100 science questions to discover!
By Mike McRae, 5 December 2024
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?
By Amanda Freeman, 4 December 2024
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.
By Ariel Marcy, 3 December 2024
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?)
By Ariel Marcy, 2 December 2024
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.
By Ian Dewar, 28 November 2024
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.
By Ariel Marcy, 27 November 2024
Have you ever wondered how water striders can walk on water? Wonder no longer!
By Chenxin Tu, 26 November 2024
Twinkle, twinkle, giant stars! Pairs of so-called ‘heartbeat’ stars change their brightness like the rhythm of a beating heart. For the first time, new models show that they also create gigantic waves.
By Ariel Marcy, 25 November 2024
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!
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