Physicists dispel Rayleigh's curse

The resolution of an optical system (like a telescope or a camera) is limited by the so-called Rayleigh criterion. An international team, led by Complutense University of Madrid, has broken this limit, showing that it is ...

Google adds fact-checking to news articles

Google is adding "fact check" tags to its news articles, introducing the feature amid a US presidential race roiled by heated disputes over the accuracy of information.

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