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Nanowires – protein fibers with gold and silver atoms

In 2001, they coated yeast protein fibers with gold and silver atoms, which let the fibers conduct electricity. The fibers are just a few nanometers — a few billionths of a meter — wide. These so-called “nanowires” are useful in very small electronic circuits such as faster computer chips. Some diseases — such as Alzheimer’s …

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Early living humans in Europe – Neandertals and Cro Magnons

Scientists believe there were once two types of early living humans in Europe, Neandertals and Cro Magnons. They believe we’re descended from Cro Magnons, while, about 30,000 years ago, Neandertals disappeared. Still, scientists wonder did Neandertals pass on any of their genes by mating with our ancestors? John Relethford: I think that they formed a small portion …

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22° halo – St. Petersburg display of June 18, 1790

Lowitz’s drawing was made June 18, 1790. The especially unusual features are the two arcs here colored red that extend from the parhelic circle to join the faint 22° halo. These “Lowitz arcs” can be simulated by plate crystals that take a range of orientations about a horizontal axis passing through diametrically opposite prism edges. …

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