In the Beginning, There was Black
Soot (or pure, amorphous carbon) was the first paint in the hands of early humans. Scenes of life and animals, painted by ancient people on the walls of caves, were the first ever works of art of their kind.
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Birds-eye view
Isn’t it amazing how birds flying in large flocks almost never collide in the air with one another? Flock flight appears smooth and straight as if somebody is controlling its movement. Logic would suggest that a flock is under the control of a leader, but many bird species do not have one.
Genes are to blame
As you know, the DNA in a cell nucleus is responsible for the storage, transmission and implementation of hereditary information. DNA contains genes that code different features, such as blue eyes or lactose intolerance.
American microbiologists Donald Schaffner and Robyn Miranda conducted a meticulous study,
the results of which were published in the journal Applied and Environmental Microbiology. The scientists alternately dropped pieces of watermelon, bread, bread with butter, and sticky, chewable sweets on common household surfaces: including stainless steel, tile, wood, and carpet, all of which were covered with the bacteria Enterobacter aerogenes, which is related to salmonella.
When you’re listening to your favorite song, it makes you happy. But why? It’s hard to say. Also, how can we understand how and why music appeared at all? The great English naturalist and author of the theory of evolution, Charles Darwin, wrote: “As neither the enjoyment nor the capacity of producing musical notes is faculties of the least direct use to man in reference to his ordinary habits of life, they must be ranked among the most mysterious with which he is endowed.”
The Ghost of Warmth
The first theory (or rather, hypothesis) was that heat or warmth is a special substance capable of penetrating into any body. This substance was called “caloric” and was considered weightless and diffused throughout the matter, capable of “combining” with bodies, turning solid bodies into liquids and liquids into gases.