Mechanical linking of small cage structures leads to a type of metal–organic framework with an architecture topologically distinct from those constructed so far. The unique polycatenated and ...

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Who doesn’t love the satisfaction that comes with solving a good riddle? As you work through plays on words, confusing hypothetical situations and hidden-in-plain-sight solutions, you get a mental ...

Quick Assist makes it easy to connect to a friend's PC from your own. 1 See another person’s screen in a window on your PC. Control their PC remotely if they allow it. Get a six-character security ...