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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!

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!

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.

What’s 180 metres long, 30 metres wide, and travels between distant solar systems? No, it’s not a new NASA spacecraft. It’s a space rock known as ‘Oumuamua, and it’s the first known object from outside our solar system that has come to visit!