Why All Wind Turbines Should Be Painted Purple?
Why All Wind Turbines Should Be Painted Purple? A study has revealed that a wind turbine’s color affects how many insects it attracts, shedding more light on why...
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Who Discovered the Cure for Scurvy?
Who Discovered the Cure for Scurvy? Scurvy was documented as a disease by Hippocrates, and Egyptians have recorded its symptoms as early as 1550 BCE. The knowledge that...
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When Was the First Human Heart Transplant Carried Out?
When Was the First Human Heart Transplant Carried Out? One of the first mentions of the possibility of heart transplantation was by American medical researcher Simon...
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What Makes Eyes Different Colors?
What Makes Eyes Different Colors? What a baby is going to look like depends on the 46 genes in his body cells. Half of these genes he inherits from his mother, and half...
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What Are Tears?
What Are Tears? Tears are made of salt water, as you will know if you have ever licked a finger after wiping them away. They happen when the gland which provides...
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When Was Acupuncture First Used?
When Was Acupuncture First Used? Acupuncture originated in China as a form of medical treatment about 2,500 years ago. It has been practiced by the Chinese ever since....
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Why Do Injured Joints Swell Up?
Why Do Injured Joints Swell Up? The swelling of an injured joint, like a knee or an ankle, is caused by the multiplication of normal cells to cushion the affected part....
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Why Do We Smile?
Why Do We Smile? We smile to show our pleasure or amusement in something or with someone. In fact, smiling seems to be an expression with which we are born, for most...
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Where Do Teeth Come From?
Where Do Teeth Come From? Teeth are formed from specialized cells which produce the three parts of the tooth—root, neck, and crown. The outer coating of the crown is...
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When Was the Stethoscope Invented?
When Was the Stethoscope Invented? The stethoscope was invented by a French doctor, René Théophile Hyacinthe Laënnec, in 1816. It consisted of a wooden tube and was...
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