What things scientists still cannot explain

Modern science has reached incredible heights in the study of the surrounding world, but there are still phenomena and things that do not have a rational explanation. In this article we will look at several such unexplained phenomena.
One of such phenomena is the "Mpemba effect". It consists in the fact that hot water freezes faster than cold water. This paradox was discovered in 1963 by a schoolboy from Tanganyika named Erasto Mpemba. He asked his teacher why the heated liquid freezes faster. Together with the English physicist Denis Osborne, they conducted a series of experiments and published an article calling this phenomenon the "Mpemba effect". Until now, scientists have not been able to find a scientifically sound explanation for this phenomenon.

Another mysterious phenomenon is the "WOW signal". In 1977, Dr. Jerry Eyman recorded a strong narrow-band space radio signal that corresponded to a signal of extraterrestrial origin. This signal was sent from the region of the sky in the constellation Sagittarius. However, it is still unknown how such a powerful signal was sent, requiring a transmitter with a power exceeding all existing on Earth. There are many hypotheses about the origin of this signal, but none of them is recognized.

The phenomenon of left-handers also remains a mystery to scientists. In the 1860s, surgeon Paul Brock established a connection between the work of the cerebral hemispheres and the activity of the hands, but modern research refutes this theory. It turned out that some left-handers have the same left-hemisphere orientation as right-handers. Scientists from different universities conducted genome studies and found that the dominance of one of the hands is associated with a group of genes and is laid at the stage of embryonic development. However, it has not yet been possible to fully explain this phenomenon.
In conclusion, there are many phenomena and things that still cannot be explained by scientists. Science continues its development, and perhaps in the future we will be able to reveal all the secrets of the world around us.