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How infections spread

15.11.2009

An unusual study is underway in the French town of Berck-sur-Mer. About 800 residents of the town were provided with electronic devices that react to the approach of the same device at a distance of 2 meters or less and register such meetings.

As a result, a "diary" of contacts between participants in the experiment is created. Weekly, these volunteers take a swab from the nasal cavity and determine which bacteria live there. Genetic analysis allows you to establish not only the type, but also the strain of bacteria. For six months, information has been accumulated on a billion cases of contact between people and more than 16 thousand data on microbes that participants in the experiment involuntarily exchanged.

Data processing will take at least another year and a half, the experimenters hope to find out the laws of the spread of infections.

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The National Space Administration of China has initiated the final phase of testing of its new unique telescope called FAST, whose main goal and task is to search for and identify extraterrestrial life - and this is not so much about finding traces of such life that ever existed before, but about directly current, which may be present on other planets and galaxies.

The telescope itself is the largest telescope in its segment, because, having a length of 500 meters, it is equipped with a huge number of additional modules and sensors that eliminate the smallest errors in its operation.

That's what a team of assemblers and engineers from the Chinese Space Agency say about it, which points out that the FAST telescope is equipped with a special internal system that allows not only to efficiently cut through the thinnest and most distant radio signals in space, but also to distinguish external radio signals from internal ones, which are created by the technology of humanity itself on Earth. Of course, with such a promising description, only the highest results should be expected, at the same time, a number of experts in the field of modern space research have their own questions regarding the performance of the telescope in the long term.

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