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How well do you know your own head? This edition of the quick quiz travels from Australia all the way out into space!

When you’re on a bus, corners can push you sideways. But what does it do to a balloon? Grab a balloon and get on board to learn a thing or two about inertia.

You’ve just received a secret coded message: AD, BA, BH, CE, DB, DI, EF You know it follows a pattern, but can you work out what pair of letters come next?

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.

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

Learn about the different parts of plants, as well as the science of preservation, by making your own pretty potpourri. Safety: Vegetable peelers are sharp. Ask an adult to help.

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

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

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

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!