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Complex molecular architectures are generally built by gradually connecting a variety of building blocks. But sometimes, complex structures arise from single-component self-assembly. Writing in NatureDatta et al.one Show how polycathenes, chains made of interlocking rings at the nanometer scale, can be formed by the remarkable self-assembly of a simple molecular …

The Turbo returns … even though every 911 has a turbocharger these days. Porsche The large number of variants of Porsche 911 is somewhat dizzying, but slow and steady, the German brand continues to deploy them, one by one. The last name to return for 922 generation car? the 2021 …

(Reuters) – The leading US infectious disease expert, Dr. Anthony Fauci, predicted Wednesday that the country will reach its goal of a coronavirus vaccine by the end of the year and was not moved by the possibility that China would come first. FILE PHOTO: Dr. Anthony Fauci, Director of the …

Never miss a morning briefing. Subscribe today to receive our AM newsletter in your inbox. As the coronavirus arises once again in THE and California, state and local officials closed businesses again, pleaded with residents to wear masks, and reiterated time and time again that our best defense against the …

Iridescent mother-of-pearl inside a Nautilus shell. Image: Wikipedia. In the summer, many people enjoy walks on the beach in search of seashells. Among the most precious are those that contain iridescent nacre (also known as nacre) inside. But many beach lovers would be surprised to learn that sparkling mother-of-pearl is …