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How to use birds to detect a gas leak? Detailed answer

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How to use birds to detect a gas leak?

Turkey vultures have a very sharp sense of smell, they are especially good at smelling ethanethiol, a gas that is released during the decay of animal corpses. Artificially produced ethanethiol is added to natural gas, which itself is odorless, so that we can smell the gas leaking from an uncovered burner. In sparsely populated areas of the United States, line engineers sometimes detect leaks in main pipelines precisely by turkey vultures circling above them, attracted by their familiar smell.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

Who was the first Moscow prince?

The first Moscow prince and the ancestor of the Moscow princes was Daniil Alexandrovich (1261-1303), son of Alexander Nevsky, great-grandson of Vsevolod the Big Nest. Around 1276, he received from his brother, the Grand Duke of Vladimir Dmitry, Moscow as an inheritance.

In 1300, Daniil Alexandrovich annexed Kolomna and a number of volosts to the Moscow Principality, and in 1303 he received Pereslavl-Zalessky by the will of Prince Ivan Dmitrievich.

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