Scientists know that we need sleep to survive but until now they didn’t know why. New research suggests it’s all to do with keeping up essential repairs

February 29 is missing from this year’s calendar. We explain why and what it has to do with the Sun, the Earth and a calendar created way back in 1582

It’s a question everyone asks — why do zebras have black-and-white stripes? Now scientists have found the answer and it’s all about blood-sucking insects and protection from diseases

Every two weeks a language becomes extinct. To try to preserve indigenous languages, the United Nations observes International Mother Language Day every year on February 21

Ever wondered why blood is always red? Kids News explains why this important liquid pumping through humans is always red but why, through white skin, it sometimes looks blue

More than 130 dangerous bushfires are burning across Queensland, reminding everyone of the importance of knowing how to call for help and stay safe in case of fire

We know if we dig a hole we won’t fall through to the other side of the world. Why? We explain what is deep, deep down below the ground and how that causes earthquakes and volcanoes

Lots of us think the sky is blue because it’s a reflection of the ocean or moisture in the air, but it’s not. Next time someone asks, you’ll be able to give the right answer

Australian circulating coins are made at the Royal Australian Mint in Canberra. It takes much longer to make a coin than it does to spend one. PLUS: Check out our Money page

The value of the Australian dollar goes up and down on a daily basis. We look at the reasons why and how it affects what you buy

Hiccups happen to us all, causing no more than perhaps a few minutes’ embarrassment. But what are they? And can you “cure” yourself? Kids News explains