Notneimanmarcus - Seriously Though. It Isn't.

(via This infographic from 1897 show the entire American Civil War on a single map - Geoawesomeness)

InfoVis is definitely not a new thing

How much is time wrong around the world? [4000x2048] Source in comments

The traditional Le Mans-start of the 12 Hours of Sebring, 1964.

Adding two identical waves, shifted by different amounts, to give a new wave. The waves interfere to either amplify each other, cancel each other out, or something in between. [more] [code]

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I was right there last August. Breathtaking.

Roofs of San Gimignano, Tuscany | Italy (by Steve Roe)

four-bar linkages, and how changing the length of the bars affects the motion in one particular case