As Gordon Brown visits Saudi Arabia, the Observer's political columnist Andrew Rawnsley writes, 'Green politics matter now more than ever. It is not woolly to be green at this time. It has never been more hard-headed.' His piece ends, 'Green is better than good. It is smart.'
Phantom codes could help quantum computers avoid errors
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A method for making quantum computers less error-prone could let them run
complex programs such as simulations of materials more efficiently, thus
making t...
11 hours ago



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