What are rocks made of?

We all know it’s important to use sunscreen in the hot Australian sun, but what exactly is sunscreen? And how does it work? Nij and the kids are joined by dermatologist Professor Pablo Fernández-Peñas for a slippery, summery and sparkling journey. 

It's time to get nosy as we answer: What is snot? What are boogers? How is snot made and why do we have it? Nij and the kids join Associate Professor Kim Murphy on a slimy slip and slide through some giant nostrils. 

<p>The grass is wet, but there’s been no rain, and the skies are clear... What explains the dampness covering everything on a cool morning? It's called dew! </p><p>Meteorologist and ABC weather presenter Nate Byrne joins Nij and the kids to explain what exactly dew is, and where ... Show More

Lava is the red-hot gloop that comes pouring out of an erupting volcano. But what is it made out of? Some sort of supercharged Silly Putty? Volcano guts? Super-spicy habanero sauce? We asked geoscience grad student Kelsey Woody to help us find the answer.Got a real scorcher of a ... Show More

<p>Volcanoes have been erupting on Earth for BILLIONS of years, and they’re still creating new landscapes today! Volcanoes can seem mysterious and scary, but people all over the world have learned to live in close proximity to active volcanoes. Today we answer questions you’ve se ... Show More

<p>How did horseshoe crabs get their names? Are they even crabs? And did they really exist before the dinosaurs? Early spring presents a unique opportunity to see these living fossils up close as they scuttle up to the shoreline along the Atlantic coast of the United States to ma ... Show More

<p><em>But Why</em> went somewhere really cool - literally - and we’re taking you along! We visited Sólheimajökull, a glacier in southern Iceland and then talked with University of Iceland glaciologist Guðfinna Aðalgeirsdóttir to discover how glaciers are formed, why they can be ... Show More

In places all over the world, there are ancient paintings in caves and on cliff walls that were made thousands of years ago by the people living there. But this was way before modern paints, and those people couldn’t mosey down to the craft store to buy their brushes…so how did t ... Show More

Welcome back to the Fun Kids Science Mid-weekly! You've been sending in your questions and this week, they're all about dinosaurs and Pangea! Find out Dan's theory on what happened to the dinosaurs, why Pangea separated, how animals and plants get their names and how long a light ... Show More

If you could take one item to a desert island what would it be? A pacifier? A rattle? How about a diaper? Well that might be just what you need if you're visiting an itty bitty baby island! Join Mindy and Guy Raz as they take the Wow Machine out to the middle of the Pacific Ocean ... Show More

If you could take one item to a desert island what would it be? A pacifier? A rattle? How about a diaper? Well that might be just what you need if you're visiting an itty bitty baby island! Join Mindy and Guy Raz as they take the Wow Machine out to the middle of the Pacific Ocean ... Show More

Exactly when and where did life on Earth begin? Scientists have long thought that it emerged three billion years ago in the ocean — until astrobiologist Tara Djokic and her team made an unexpected discovery in the western Australian desert. Learn how an ancient rock found near a ... Show More

How do you become an explorer? And what does an explorer do? These are questions we get all the time.In this National Geographic Kids podcast, we’ll talk to eleven explorers who contribute to science and exploration through different fields. Learn about the challenges and inspira ... Show More