I’m on a 747 heading from Hong Kong to London, and find myself looking out the window at the peaks of central China, just south of Lanzhou. These mountains, and their bigger cousins the Himalayas, are ...
In math, when working with fractions, you often have to find the lowest common denominator. This can be a little involved at times, requiring the use of prime numbers, etc.. In politics, it's much ...
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