The white blood cells act as an army of fighting cells, protecting your body from bad cells known as germs. White blood cells can capture germs and even swallow them.
Rats will eat anything and they have a LOT of babies. That’s why there’s so many of them.
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Black rats are originally from India and brown rats are originally from China.
Even when we are asleep, we can still feel if we are comfortable and our ‘sixth sense’ is working to let us know where we are in our beds.
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Our body knows how it is moving and where it is because of a sense called proprioception, a ‘sixth sense’ that helps your body know where it is in the world. And it works even while you’re asleep.
Those worksheets might not do much for a child’s grades.
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Have you ever walked into a room and realised you can’t remember what you were looking for? We tend to do this more when we are thinking of a few things at once or doing two things at the same time.
Blowing bubbles is fun and also involves a lot of science.
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Bubbles in fizzy drinks are full of science you probably didn’t know about - and which can even be found in volcanoes!
If you have been drinking more water than your body needs, the body tells the kidney filters to get rid of the spare water. That’s when your urine will look paler.
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One of the waste products that your kidneys put into your urine is a chemical called urobilin, and it is yellow.
The air up high is just really bad at ‘holding’ onto the radiation coming from the Sun, and the warmth passes straight through it on its journey toward the ground.
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It helps if you imagine the ground here on Earth as a big heater. It keeps us warm, and if you move away from the heater you feel cold.
Another reason you don’t want to get too close to a black hole is because of something we call ‘spaghettification’. If this happened to Earth it would be… unpleasant.
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If you got too close to a black hole, it would suck you in and you’d never be able to escape, even if you were travelling at the speed of light.
This point of no return is called the event horizon.
Scratching is a natural behavior for cats.
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Have a cat who just loves to scratch? Declawing is a major surgery that comes with serious long-term side effects – and it might not solve the problem anyway.
Fighting fire during training session.
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You could jump much higher on the moon than you can on Earth – but you’d be in no danger of shooting off into space.
Researchers pour a barrel of hagfish into a holding tank aboard a research vessel about 20 miles off the coast of Portsmouth, New Hampshire.
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Yes, the Sun absolutely spins. In fact, everything in the universe spins. Some things spin faster than the Sun, some are slower and some things spin ‘backwards’.
Big worries can feel scary and confusing. Sometimes a little worry can feel like a big one too.
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Birds spend a lot of time and energy singing, but they don’t do it the same way in every season of the year. And some can’t sing at all. What’s the purpose of birdsong?
People do live outside Earth – on the International Space Station! But humans have had to find a way to make the conditions there more like what we’re used to at home.
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