It seems in ancient Greece there was a man named Gordias, who devised a rope knot so large and complicated no one could untangle it. The claim was that the person who could undo the Gordian knot would ...
Imagine a knot so small that it can’t be seen with the naked eye. Then think even smaller. Chemists have tied together just 54 atoms to form the smallest molecular knot yet. Described January 2 in ...
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