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In between Adelaide and Perth lies the Nullarbor, a vast, dry plain. It’s famously flat; the railway line goes dead straight for almost 500 kilometres before it needs to turn. But hidden in the saltbush, scientists saw a strangely circular hill. So where did this circle come from?

We humans only have 2 legs, but a lot of creatures have many more. Do you have the legs to go the distance and get 5/5 on this quiz?

This quiz is all about waves. Will you ride it to victory, or will you wave goodbye to your high score?

Here are 5 fresh questions to juggle for this week’s quiz. Will you score high, or come crashing to Earth?

Need a bag to carry your library books, or to tote home your shopping? Here’s a way to turn an old t-shirt into a new bag, no sewing needed, during Plastic Free July.

This quiz explores science’s softer side. Will your score leave you feeling warm and fuzzy?

We had our eyes on the skies as we wrote this quiz. Can you reach for the stars or are you coming back down to Earth?

The imaginary worlds of superheroes often rely on real-world science. Can you pick fact from fiction in our superhero science quiz?

Every second counts when a big earthquake hits. As soon as an earthquake sensor picks up the tremor, warnings can be sent over the internet, much faster than the shake travels through the Earth. And now, scientists have found a way to detect big earthquakes fast, maybe even before the ground starts to shake!

These clear, shiny gemstones are very valuable and oh-so-special. Can you sparkle like a diamond and get full marks on our quiz?