A nanosecond is a billionth of a second, but we’re not very good with really big or tiny numbers. So, Grace Hopper, the inventor of “the first compiler for a computer programming language”, explains to some eager, young minds with a piece of wire.
Grace Hopper explains a nanosecond with a visual aid
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Shifting Causes of Death
The most common causes of death changed over the years. They vary across sex and age group. This animation shows the details of these changes.
Who Makes More Money
Someone mentioned that $400,000+ per year was commonplace in American households. That seemed like an odd comment.