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By Natalie Kikken Did you know that nails grow on a turtle’s flippers? At Ningaloo Reef, Western Australia, turtle nail clippings are providing new and exciting insights. CSIRO scientists can work out what turtles eat by analysing the chemicals in these nail samples.

Paleontologists learn a lot from looking at bones. Assembling a skeleton can show how a creature moved, where they lived, and even how fast they were.

When you think about a beehive, you might imagine it containing flat combs made of perfect hexagons. Except, that’s not the whole story. There are many different species of bees, and there are lots of ways that bees build their combs.

Your eyes can see colour and brightness, but there’s one more thing they can detect. With the right technique, many people can tell if light is polarised – no glasses needed!

Right now, there are about 7.8 billion people on Earth, and that number keeps on growing. But could this growth be coming to an end? Experts have made a new prediction that Earth’s population will not reach 10 billion people. And the reasons why are surprisingly positive.

Get in fast to do this quiz! For better or worse, we’re looking at some things that are almost gone.

Penguins come in many shapes and sizes, from little penguins all the way up to kings and emperors. But millions of years ago, penguins were even bigger, and studying these gigantic birds can teach us a lot about evolution.

Scientists aim for accuracy, but it’s not always possible to be exactly right. This quiz is all about getting close, and not always close enough! So how close to full marks can you get?

By Hannah Evans The depths of oceans are mysterious. Since Earth’s surface is covered by over 70% ocean, there is a lot to explore. But during a pandemic, it’s a bad idea to fill a research ship with scientists from around the world. Many research ships have stopped sailing, but not all of them!

There are some giant things lurking in these questions. Some of them are easy to spot, and others are hidden. Can you uncover all the answers?