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Humans & Society

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wheat map

GRAIN TRAIN  Agriculture spread from what’s now Turkey along southern (purple arrow) and northern routes (yellow arrows) into Europe. DNA recovered from soil at the underwater site of Bouldnor Cliff indicates that wheat reached England at least 2,000 years before it was first grown there.

Big Brain

FOLD IT  A gene that only humans have can make the normally smooth outer layer of mouse brains develop folds similar to those in human brains (upper right center). The gene may have been important for the evolution of big human brains.

Iraq banknote featuring Alhazen

Eleventh-century scholar Ibn al-Haytham, known as Alhazen, was a major contributor to the field of optics and one of the most curious characters in the history of medieval science. He was commemorated on this Iraqi banknote. 

Humans & Society

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