This week saw an exciting announcement from the US space agency, NASA with the safe arrival of its MAVEN spacecraft in orbit around Mars. But how did it get there and what is its mission?
Rebecca is 9 years old and is due to move to a new school soon. She wrote for us about her fears and her hopes for the big changes coming to her life.
You may have heard of a Raspberry Pi – a credit card sized computer that plugs into your keyboard and monitor – but exactly what IS a Raspberry Pi, how does it work and what can you do with it?
12 year old Elspeth takes a closer look at the mini-computer and explains how even young kids can use it to learn how computers work and how to code.
After talking about bones in my last article, I thought I’d go on to talk about poo, or at least how it’s made.
I like eating. I think a lot of people do. Biscuits are a particular favourite…chocolate Bourbons especially. But how do we get from biscuit, or apple, or stick of celery to the brown stuff we call poo.
Well, it’s thanks to the digestive system, which starts at the mouth, and runs all the way to our bottoms. So let me take you on a guided tour.
As you know, there is a vast number of different kinds of plants growing all over the world, from snowy slopes to Amazon rain forests to dusty deserts: plant life is everywhere. So how does it all work? Lets start with seeds.
The Life of a Seed
Picture a seed – I am sure you have all seen them. It will have a hard outer shell to protect it. When it has found the right conditions of warmth and moisture, this shell will crack or split as a root pushes its way out to take hold in the soil. Then the plant will start to grow and a shoot will make its way upwards, with the root growing down, to draw moisture from the ground and provide some balance for the plant, keeping it firm in its place.
Just like you and me, plants need food to grow. Their food is very different from ours, of course! Here’s what they do: the leaves draw water up from the roots, through the stem, and they also soak up sunlight and air. These three things combine to make food in the leaves, where it is stored. Now think of an onion. It is formed to store the food for the plant.