How do mosquito and other insect repellents work?

There are tens of thousands of times more insects than people. They surround us everywhere, and in some places it is simply impossible to hide from insects.

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People can sense single photons

A photon is an amazing elementary particle, a quantum of electromagnetic radiation. It has no mass and can only exist moving at the speed of light. Simply put, a photon is light

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How many smells can a person smell?

For a long time, biologists believed that the human nose could distinguish between about 10,000 smells. But researchers at Howard Medical Institute disproved this misconception by finding through experiment that humans

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Is red wine superb for your health?

It has long been believed that drinking red wine in reasonable amounts is good for the body. Some note, for example, that people who have a glass of red for dinner are less prone to heart disease and on average live longer

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Is it possible to get sick while out in the cold?

How many times did our mothers tell us as children that when we go out in the cold, we must dress warmly otherwise we will catch a cold. For quite some time, scientists have been able to determine that colds in humans

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Wounds sustained during the day heal faster than wounds sustained at night

​What difference does it make whether you cut your finger during the day or at night - it will still heal the same time? But the results of a study by experts from Cambridge University show that the speed of wound healing

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What is laughter, and where does it come from?

Laughter is a human reaction, which is accompanied by involuntary contractions of the facial muscles, and the respiratory apparatus - involuntary sounds. These contractions can be caused by humor, tickling, sincere joy

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Why do certain songs constantly “roll around” in my head?

Every person at least once in his life has faced this phenomenon: after listening to music, one song does not leave our head, continuing to scroll through our consciousness again and again.

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Why does the boomerang turn as it flies?

Boomerangs still gives many generations of scientists a hard time. Explaining its flight proved too far from simple.

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