On the ever-decreasing distinction between those who produce digital data, those who design its visualization and those who use it as a new form of cartography

“Fascinating . . . memorable . . . revealing . . . perhaps the best of Carl Sagan’s books.”—The Washington Post Book World (front page review) In Cosmos

Originally published to wide acclaim, this lively, cleverly illustrated essay on the use and abuse of maps teaches us how to evaluate maps critically and promot

COLORBLINDNESS/COLOURBLINDNESS/COLOR BLINDNESS/COLOUR BLINDNESS/ Accepted by leading authorities as a simple and accurate method for discovering congenital colo