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The timeline can be navigated with the “Scroll Left” and “Scroll Right” buttons or by dragging the pointer to a date on the timeline waveform (located at the bottom of the screen on the desktop version and on the left of the screen on mobile). To filter by a particular topic and see a smaller section of the data, make a selection on the dropdown “Filters” menu or click “Search” to do a keyword search. Hover over the abbreviated filter tags in the blue boxes to see the complete name of the filter, or click a filter to display all the data with this tag. If you want to take a deeper dive into a specific topic by viewing a narrative essay page and a curated timeline, click on “Stories.”

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Side portrait of a bust of Hippocrates, a bearded man with wavy, receded hair.
Engraving of Hippocrates by Peter Paul Rubens (1639).

Hippocrates born in Greece.

460 BCE

The Story of The Colonizer Wound
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Engraving of Hippocrates by Peter Paul Rubens (1639).

Hippocrates, an ancient Greek physician whose "Hippocratic Oath" is still in use today, is credited with developing the theory of the "four humours" of the body, which are elemental temperaments that must be kept in balance to prevent disease. The four humours are blood, phlegm, black bile, and yellow bile. Each relates to an element and a state of being (dry/damp, etc.), and shows some similarities to understandings of the body in Traditional Chinese Medicine (TCM). The theory of the humours first originated in Egypt and Mesopotamia.