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
This is an American Workday, By Occupation
I simulated a day for employed Americans to see when and where they work.
Life expectancy changes
The data goes back to 1960 and up to the most current estimates for 2009. Each line represents a country.