Russian scientists give an explanation for the wonder of beaver survival throughout the 19th century, when these animals were badly endangered and lived in conditions that would be fatal for another mammalian species.
A population of beavers can survive, if it includes only three animals living together. Such a small size of viable population is explained by the genetic adaptation of beavers to inbreeding. Beaver genome and behaviour account for an outstanding viability of this species, as is established by A.N. Milishnikov and his colleagues from the Severtsov Institute of Ecology and Evolution in Moscow.
Beavers have a rather puritan character: as distinct from other mammalian species, they dont give way to promiscuity, but live as couples and even families. Several families make up a settlement (colony) that is a larger society of beavers. However, families maintain their genetic isolation and do not interbreed. Each family resides within a certain area of a river and bank, where the others cannot enter (trespassers are severely punished).
Sergey Komarov | alfa
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Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) and the University of Konstanz are working on storing and processing information on the level of single molecules to create the smallest possible components that will combine autonomously to form a circuit. As recently reported in the academic journal Advanced Science, the researchers can switch on the current flow through a single molecule for the first time with the help of light.
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Astronomers from Chalmers University of Technology have used the giant telescope Alma to reveal an extremely powerful magnetic field very close to a supermassive black hole in a distant galaxy
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