What Will Happens to the Earth if the Ozone Layer Keeps Ripping?
Nov26

What Will Happens to the Earth if the Ozone Layer Keeps Ripping?

Today you can’t pick up a newspaper or watch a nature programme without hearing about global warming and the damage we are doing to our planet. However this isn’t the first natural calamity, caused by man in the modern era – until a decade ago it was all about “the Ozone Layer”.

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How is the Non-Stick Coating Stuck on to Kitchenware?
Oct29

How is the Non-Stick Coating Stuck on to Kitchenware?

How do you get something that’s main purpose is to not to stick, stick to something ? – Teflon and how to make it ‘sticky’

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Why Do Humans Have Finger & Toenails?
Oct22

Why Do Humans Have Finger & Toenails?

A fingernail is produced by living skin cells in the finger. Fingernails and toenails are almost exclusively a feature of humans and primates. But why do we have them at all ?

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If Humans Could Fly How Big Would Their Wings Have to Be?
Oct01

If Humans Could Fly How Big Would Their Wings Have to Be?

Humans were clearly not meant to fly … we weigh a lot more in proportion to our size than birds, which have hollow bones. But is it possible to flay under our own power ?

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How Did Different Human Skin Colours Come About ?
Feb26

How Did Different Human Skin Colours Come About ?

Skin colour is the result from the presence of a pigment called melanin, located in the epidermis, or outer skin layer, and produced by cells called melanocytes. But why would there be such a variety in Human Skin Colour ?

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How Do Satellites Always Stay in the Same Place in the Sky?
Feb12

How Do Satellites Always Stay in the Same Place in the Sky?

“How Do Satelites Always Stay in the Same Place in the Sky?” – In fact not all satellites do – only the ones called geosynchronous.

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If we can’t see a Black Hole, How do we know they exist?
Jan29

If we can’t see a Black Hole, How do we know they exist?

A black hole is perhaps one of the strangest objects in our universe. It is in fact the remains of a massive dead star that has run out of fuel and collapsed. But how do we know it’s there ?

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Why Are Men So Hairy ?
Jan15

Why Are Men So Hairy ?

Hairy heads, hairy legs, and hairy armpits-the human body is covered in the stuff! Although many of us attempt to get rid of it, it is still obvious that men have more body hair than women. So what is the point of body hair, and why are men so hairy?

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What is a Black Hole?
Nov27

What is a Black Hole?

A black hole is perhaps one of the strangest objects in our universe. It is in fact the remains of a massive dead star that has run out of fuel and collapsed.

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How Are the Times of Sunrise & Sunset determined ?
Oct30

How Are the Times of Sunrise & Sunset determined ?

Given that astronomy is the oldest science and that sunrise and sunset are very basic celestial phenomena, you might have thought this would have been sorted out centuries ago. Not a bit of it!

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Why Can’t We Invent a Time Machine?
Oct16

Why Can’t We Invent a Time Machine?

Why Can’t We Invent a Time Machine? – Well, theoretically it IS possible to travel in time – but only forward, not backward in time.

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How do Ants Communicate ?
Sep25

How do Ants Communicate ?

When ants discover a food source its not long after that their fellow colony members descend on that location to make the most of any tasty morsel that’s been discovered. Clearly there’s some form of communication going on between colony members – but how ?

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What Makes the Earth Rotate?
Sep04

What Makes the Earth Rotate?

What Makes the Earth Rotate? … In a Nutshell : Earth rotates simply because it has not yet stopped moving!

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Why are some solids like glass and perspex transparent?
Aug28

Why are some solids like glass and perspex transparent?

Anything that is transparent allows light rays to get through the thicket of atoms packed within it more or less unscathed. The reason light can make it through substances like glass is that their molecules only mop up light of wavelengths shorter than those of visible light.

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How Do we See Colour?
Jul17

How Do we See Colour?

The human eye and brain work together to perceive colour. Light is sensed on the retina at the back of the eye. The centre of the retina contains about 6-7 million cells called cones. Different ones are sensitive to red, green, and blue light.

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