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Dozens of viruses seem to use a different DNA base
Enlarge / Normal DNA uses adenine (left), while some viruses use diaminopurine instead. DNA is the genetic material used by every living organism. But, in a few edge cases, the four bases of DNA—adenine, thymidine, cytosine, and guanine—undergo chemical modifications. And in viruses, things are far more flexible, with many using RNA instead of DNA […]
Galaxy S21 Ultra—$200 cheaper but still not competitive
The Galaxy S21 Ultra. [credit: Ron Amadeo ] Next up on the review bench is Samsung’s latest flagship smartphone, the Galaxy S21 Ultra. Like most Samsung phones, it’s technically competent and features a new Snapdragon 888 SoC, a new 10x optical zoom camera, and Samsung’s, uh, interesting approach to charging. The big news is that the […]
SpaceX plans Starlink broadband for cars, boats, and planes
Enlarge / Cars could eventually get satellite Internet from SpaceX Starlink. (credit: Getty Images | Ozgur Donmaz) SpaceX on Friday asked the Federal Communications Commission for permission to deploy Starlink satellite broadband to passenger cars and other moving vehicles. The application describes SpaceX’s plans for Earth Stations in Motion (ESIMs) for automobiles, ships, and aircraft. […]