Tag: physiology




Why Do We Get Pins & Needles?

Whether you are sitting still for hours, perhaps with your legs crossed, or wake up sleeping on your arm the “wrong way,” you have no doubt experienced pins and needles – sometimes referred to as your leg “falling asleep”. Though this pain soon alleviates itself – what is happening in your body to cause such an irritating sensation?

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What is Love ? (Scientifically Speaking)

What is Love ? : A very deep and involved question. However in this article we will restrict ourself to the scientific point of view. What is going on in our bodies, and brains when we fall in love or see the object of our inner most desires.

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Which Came First – The Chicken or the Egg ?

Okay as questions go this is a ‘doozy’ – as our American cousins would say. It’s a question that has perplexed humanity from as early as the ancient Greeks all the way to us in the 21st century, and we’re still dying to know : Which came first-the chicken or the egg ?

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What Makes Animals Hibernate?

Imagine being able to trigger hibernation in humans to reduce tissue damage caused by strokes, heart attacks and surgery. Well Japanese researchers have uncovered the chemical switch that controls an animal’s hibernation pattern.

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Why Can’t We Photosynthesise?

It would be handy wouldn’t it – photosynthesising all our food rather than having to stop to eat three times a day – so why can’t we do it ?

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How do Caterpillars turn into Butterflies ?

As children, many of us learn about the wondrous process by which a caterpillar morphs into a butterfly. The story usually begins with a very hungry caterpillar hatching from an egg. But what does that radical transformation entail?

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The Rhythms of Life – Our Body Clock

The human body is a pretty remarkable thing to the point that it actually has several different types of internal clocks that helps to keep us ‘ticking along’ for both the daily and seasonal rhythms of life.

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Why doesn’t the Earth move when we move our eyes ?

This is another of those questions to which the 1st response is often ‘Why should it?’ But think about it – when something moves in the external world, its image moves across the retina, the ‘screen’ at the back of the eye. If something is stationary in the external world and we move our eyes past it, its image will move across the retina in the same way. – How do we tell the difference ?

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