Insects, scabs, rashes, and even dust can all create the insatiable desire to scratch! Even conditions such as depression or obsessive-compulsive disorder can create this same sensation. Scratching your own body is rather an odd thing to do, so why exactly do we itch?
It was Aristotle who defined the five senses: touch, taste, smell, sight and hearing. But in the last several decades, the definitions of these senses have begun to tangle. Some studies even suggest that 1 in 5 people can ‘hear’ a flash of light.
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?
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.
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 ?
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.
Why do men have nipples? – In a Nutshell : Men have nipples because women do.
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 ?
Chameleons camouflage themselves in a variety of different ways but most famously by changing the colour and pattern of their skin.
We seem to have the exactly the right number to do the job – but why 5 fingers and five toes on each appendage – Why not 6 or 10 on each ? In this article we look at what is believed to be the reason it is “just so”.
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?
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.
Sometimes science has a strange way of proving what every body else has known all along, so here it is : Apparently “Men and Women are different”. Not only that but their brains are wired differently!
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 ?