Quanta Magazine

The Chinese AI company DeepSeek released a chatbot earlier this year called R1, which drew a huge amount of attention. Most of it focused on the fact that a relatively small and unknown company said it had built a chatbot that rivaled the performance of those from the world’s most famous AI companies, but using a fraction of the computer power and cost. As a result, the stocks of many Western tech…

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In October 2015, a young mathematician named Clemens Sämann was flying home to Austria from a conference in Turin, Italy, when he had a chance encounter. He found himself seated beside Michael Kunzinger, another conference attendee. Kunzinger was a math professor at the University of Vienna, where Sämann had just started his postdoctoral research. They soon got to talking, landing on a subject…

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When the sun shines on your skin, what does it hit? When it causes a burn, what went wrong? Underneath that pain is your cells’ emergency response to DNA damage. When a hazard, such as ultraviolet light, ionizing radiation or certain chemicals, damages DNA, the cell needs to respond at breakneck speed. Ideally it either repairs the damage to its genomic information repository…

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