An unknot (also known as the trivial knot) can be drawn with any number of crossings. Any possible manipulation of a knot ...

An iconic example of this is the failure of the first Ariane 5 launch in 1996. Just 37 seconds after launch, the rocket left its trajectory began to spin uncontrollably and eventually self-destructed.

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Crea Taylor / Investopedia Earnings before tax (EBT) is viewed by stock analysts as a more ...

September baseball means expanded rosters, playoff races and math for teams in postseason contention. The Philadelphia Phillies are in the postseason and are National League East champions, but ...

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