By Sarah Geegan
Visionaries often ask us to look skyward for signs of alien intelligence. A new book, "The Oxford Handbook of Comparative Cognition," edited by Thomas Zentall of the University of Kentucky Department of Psychology and Edward Wasserman of the University of Iowa, suggests that we might more fruitfully explore and understand alien intelligence right here on Earth.
This 960-page volume, published in February by Oxford University Press, is a compendium of scientific research into the cognitive worlds of animals, a flourishing field of study that that was prompted by Charles Darwin’s provocative proposal that