What can bonobos teach us about the nature of language?
Lindsay Stern writes: One spring day in 2005, a yellow school bus carrying six passengers turned onto a freshly paved driveway seven miles southeast of downtown Des Moines, Iowa. Passing beneath a tunnel of cottonwood trees listing in the wind, it rumbled past a life-size sculpture of an elephant before pulling up beside a new building. Two glass towers loomed over the 13,000-square-foot laboratory, framed on three sides by a glittering blue lake. Sunlight glanced off the western tower, scrunching…