Day Planners

When Mozart slept and when the Queen takes her tea.

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Body Rhythms

Growth and regeneration, from blood cells to taste buds.

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What it all costs, minute by minute.

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Epic filibusters in the U.S. Senate.

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A lot can happen in 250 milliseconds.

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...ten days for the Pony Express to deliver a letter and 0.016 seconds for the atomic bomb to explode.

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Prison sentences of the famous and infamous.

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The average life span of animals in nature.

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Cultural calendars and their holidays.

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Clocks, calendars, and dating systems.

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