By studying old and dead stars, we can discover what will happen to our sun in the far, far future. And it won't end with a big explosion.
Photons stream from the sun and interact with all matter on Earth. Depending on what the light touches, some of the photons will get absorbed or soaked up. And some will bounce back.
The first thing to know is that Siri is not a "who" – Siri is a "what".
December is named for the Roman word for "tenth". So, why is it the twelfth month?
Whiskers are not just ordinary hairs. They are thicker and go deeper into the tiger's skin and send messages to its brain about what is happening in the world around it.
Meteorites might look like boring bits of rock – but each one has a fascinating story.
The short answer is we have evolved to have nails because they help us pick things up (like food) and pick things off (like bugs).
When a sound is made, it spreads. And when it hits a hard surface that is far away, it bounces back and comes back to where the sound was made. That's what we call an echo.
When my kidneys stopped working properly, my dad gave me one of his kidneys. Thanks, Dad.
Sometimes, two different animals will evolve to have a similar adaptation, even when they are not closely related. Flight is an excellent example.
It's good to know how currents are formed in the ocean, as they can be quite dangerous!
The brain itself can’t actually feel pain. It can't sense damage to itself the way your finger can. We know this because people can have brain surgery while they are totally awake.
Fruit ripening is all about plants getting animals to eat the seeds that are inside their fruits. This helps the plants get their seeds to somewhere new where they can grow into a new plant.
An adult brain weighs about 1.5kg. It's mostly water with some fat, protein, sugar and a dash of salt. Sounds like pancakes, I know, but I once tried chicken brains and, well, pancakes are tastier.
Molluscs that have shells - like pipis, clams and oysters - have to build their own shell from scratch. And they keep building it their whole life, using chemicals from the sea and their own bodies.
The pressure in the deepest part of the ocean can be 1,000 times greater than the pressure we experience at sea level – but creatures that live and visit there have some very special features.
The first mummy was wrapped up about 7,000 years ago, and it was from South America.
Your stomach works very hard with some other body parts to break down food into small pieces. Your body takes in what it needs and the rest is turned into poo.
Robots are not yet as good as humans at working with other humans or even working with other robots.
There are three ways heat can be shared: conduction, convection and radiation. Find out which one lets heat travel through space.