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A clock that will still tick in 10 millennia News

by David, 15 March 2018 | 3 comments

Close up image of the stainless steel gears of a clock.

Time keeping machines aren’t always built to last, but some do manage to stand the test of time. The Cronulla Clock Tower houses a clock that’s almost 250 years old, for example; the clock in England’s Salisbury Cathedral is still ticking 630 years after it was built.

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On Earth and Mars, time and travel – a quick quiz Quiz

by David, 14 March 2018 | 0 comments

Black lightning bolt in purple circle

Put your thinking caps on, it’s time to test your skills in chemistry, time, space, tech and biology!

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Want to launch a rocket? Competition

by David, 9 March 2018 | 17 comments

A rocket kit

To celebrate the launch of Double Helix Extra, we’ve scoured the Double Helix prize cupboards and found some fantastic little rockets to give away. These Liquifly Fizz Rockets take vinegar and bicarb and turn them into motion! Simply measure in the fuel, and the rocket will fly more than five metres.

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Potpourri preservation Activity

by David, 8 March 2018 | 2 comments

A bowl filled with dried rose petals, orange peel and cinnamon sticks

Learn about the different parts of plants, as well as the science of preservation, by making your own pretty potpourri.

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1936 brainteaser Brainteaser

by David, 7 March 2018 | 2 comments

Brain icon

1936 is a square number. That means you can make it by multiplying a whole number by itself: 1936 = 44 x 44

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Catching a colossal prime News

by David, 1 March 2018 | 0 comments

Picture of numbers arranged in a disorganised pattern with some on their sides and some sight side up.

Late last year, Jonathan Pace’s computer found something special. Jonathan is an electrical engineer who also manages computers for charities, so he has a lot of computers, but this one was nothing out of the ordinary. Except for one thing: the computer was running software from the Great Internet Mersenne Prime Search, an international volunteer…

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Atom pieces and dendrochronologists – a quick quiz Quiz

by David, 28 February 2018 | 4 comments

Black lightning bolt in purple circle

From big cats to tiny sub-atomic particles, this quiz will test your scientific know-how!

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Double Helix Extra: your new email update! Update

by Jas, 28 February 2018 | 0 comments

10 year old holding tablet and atomic model.

Double Helix magazine is excited to announce that we’re merging our newsletters Science by Email and Maths by Email, and adding a splash of technology and engineering news. Keep an eye out for our new look email, called Double Helix Extra!

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Modern recipes for ancient grains News

by David, 23 February 2018 | 0 comments

Image of a bowl of muffins and some bags labeled Teff

You’ve heard of rice and wheat. You may have heard of maize and quinoa. But have you heard of teff? This ancient grain has been feeding the people of Ethiopia for thousands of years. And thanks to the work of CSIRO, it might soon be feeding you too!

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Blood-splatter by numbers Activity

by David, 16 February 2018 | 1 comments

A blood spot with measurements for width and length

Blood left at a crime scene can tell you a lot about the events. To rewind the clock and look back in time, you just need a ruler and some trigonometry. You will need Red food dye Chocolate topping (or corn syrup) Water Measuring cup Mixing bowl Spoon Drinking straw Old clothes A large sheet…

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