The book has a dreamlike blue cover of a metallic tall ship sailing across the planet, downloaded from Eyewire.com and appropriate to the space-time journey of Sasenarine Persaud, whose ancestors crossed the kala pani from India -- and to another of the literary ancestors he questions, "serpenteyed Harris." Peter Nazareth University of Iowa
For example, 165,000 volunteers in EyeWire have analyzed thousands of images online to help build the world's most complete map of human retinal neurons.