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What is the deepest level of reality? In this Quanta explainer, Vijay Balasubramanian, a physicist at the University of Pennsylvania, takes us on a journey through space-time to investigate what it’s made of, why it’s failing us, and where physics can go next. Explore black holes, holograms, “alien algebra,” and more space-time geometry ...
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The boy who murdered classmate Harvey Willgoose at a school in Sheffield can be named for the first time after a judge lifted an order protecting his identity. Mohammed Umar Khan, known as Umar, stabbed Harvey to death during a lunch break at All Saints Catholic High School on 3 February. Both boys were aged 15 at the time. #itvnews
0:26
The boy who murdered classmate Harvey Willgoose at a school in Sheffield can be named for the first time after a judge lifted an order protecting his identity. Mohammed Umar Khan, known as Umar, stabbed Harvey to death during a lunch break at All Saints Catholic High School on 3 February. Both boys were aged 15 at the time. #itvnews
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