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Why did the police stop looking for a killer suspected of 40 crimes since 1993? Detailed answer

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Why did the police stop looking for a killer suspected of 40 crimes since 1993?

Since 1993, 40 crimes have been committed in Germany, Austria and France, including 6 murders, after which samples of one woman's DNA were found at the crime scene or on the body of the victim. The alleged killer became known as the "Phantom of Heilbronn". The police could not find any leads, and the crimes had nothing in common - completely different victims, places, accomplices. It was only in 2009 that it was established that there really was no connection between all these cases. It turned out that DNA samples were taken with cotton swabs, which were initially contaminated with the DNA of their packer in an Austrian factory.

Authors: Jimmy Wales, Larry Sanger

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Why are Belgian blue cows with extremely high muscle mass valued?

Belgian blue cows, also called monster cows, are characterized by extremely high muscle mass. This breed appeared due to a random mutation in the gene responsible for myostatin, a protein that prevents excessive muscle growth. Belgian blue cows are valued for their lean meat with minimal fat content and are bred by linebreeding, that is, crossing individuals with their direct ancestors.

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