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As long as a thumb and with a six-centimetre wingspan, you’d think it would be hard to miss Wallace’s giant bee.

In this quiz we’re looking at animals and plants we’re in danger of losing, and how to protect them. Test your knowledge about endangered species!   Find the answers to many of these questions in Issue 30 of Double Helix magazine. Purchase a copy from the CSIRO Publishing website.  

Here’s a classic activity with a showy twist. Surprise your friends by inverting a water bottle without spilling its contents!

Which two whole numbers – without any zeros – multiply together to make 1 000 000?

Imagine bacteria, clinging to a rock, floating deep in space. The rock was once blasted off its planet by a cataclysmic explosion. Hundreds of years in the future, the rock encounters a new planet, bringing these lonely bacteria with it. The question is, could the bacteria survive?

Written by Elvina Lee Scientists are on the lookout for answers, from the backyard to outer space! This week’s quiz involves a range of intriguing discoveries. How many of them have you heard of? If you’re after more fun science for kids, subscribe to Double Helix magazine!  

Maryam had been practising the times tables really hard, so she was on the alert for interesting patterns. On her dad’s birthday she noticed something special. “You’re four times older than me, Dad,” she exclaimed.

Way back in 2006, an unusual anime began airing on Japanese television. Although the series was about aliens, time travel and other supernatural events, no one could have predicted the strange effects that The Melancholy of Haruhi Suzumia would have on the world of mathematics.

Written by Elvina Lee As they say in Star Trek, “Space: the final frontier”. How well do you know this big beyond? This week’s quiz will test your familiarity with all things space. If you’re after more fun science for kids, subscribe to Double Helix magazine!  

What’s the next letter in this sequence? F, S, T, F, F, S, S, E …