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Can you spot all the perspective mistakes in this satirical engraving from 1754?
graph paper FTW
How to draw a 3D cube illusion on graph paper
"Look again at that dot. That's here. That's home. That's us."
Bizarre family selfie in which half of man's body has vanished
lighthouses are nice
Two photographers, unbeknownst to one another, shoot the same picture at the same moment
A simple comic about keeping things in perspective
Is new stem cell research super important, or kind of a big yawn?
Great dad dies (also, he was a scientist)
Cats and optical illusions: Now with control experiments!