An unknot (also known as the trivial knot) can be drawn with any number of crossings. Any possible manipulation of a knot ...
It was previously thought that children younger than 7 couldn't find efficient solutions to complex problems, but new ...
IEEE Spectrum on MSN
The Quest to Sequence the Genomes of Everything
Eukaryotes are organisms whose cells contain a nucleus. From protozoa to human beings, all have the same basic biological ...
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