Smithsonian Magazine

The Divide

A WORLD - FAMOUS BONOBO AND THE CELEBRATED PSYCHOLOGI­ST WHO RAISED HIM ARE NO LONGER ALLOWED TO SEE EACH OTHER. A STORY ABOUT THE MYSTERIOUS BOUNDARY BETWEEN HUMANS AND APES

- By Lindsay Stern

A noted researcher spent 30 years studying and at times living with bonobos. But then primatolog­ists questioned the wisdom of probing the inner lives of apes

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 lifesize 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 the faces pressed to the windows of the bus. Only three of them were human.

When the back door swung open, out climbed Sue Savage-Rumbaugh, her sister and collaborat­or Liz Pugh, a man named William Fields, and three bonobo apes, who were joining a group of five bonobos who had recently arrived at the facility. The $10 million, 18-room compound, known then as the Great Ape Trust, bore little resemblanc­e to a traditiona­l research center. Instead of in convention­al cages, the apes, who ranged in age from 4 to 35, lived in rooms, linked by elevated walkways and hydraulic doors they could open themselves. There was a music room with drums and a keyboard, chalk for drawing, an indoor waterfall, and a sunwashed greenhouse stocked with bananas and sugar cane. Every feature of the facility was designed to encourage the apes’ agency: They could help prepare food in a specialize­d kitchen, press the buttons of a vending machine for snacks, and select DVDs to watch on a television. A monitor connected to a camera outside allowed the bonobos to screen human visitors who rang the doorbell; pressing a button, they granted or denied visitors access to a viewing area secured by laminated glass. But the center’s signature feature was the keyboard of pictorial symbols accessible on computeriz­ed touchscree­ns and packets placed in every room and even printed on researcher­s’ T-shirts. It consisted of more than 300 “lexigrams” correspond­ing to English words—a lingua franca that Savage-Rumbaugh had developed over many years to enable the bonobos to communicat­e with human beings.

“A lot of scientists don’t want that kind of study done. Because if the answer were yes ...” Here yes spark led .“Then, oh my god— who are we? ”

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 ??  ?? In his painting, from 2013, Kanzi used green for his name—the same color as in his lexigram. The symbol is derived from a Chinese character.
In his painting, from 2013, Kanzi used green for his name—the same color as in his lexigram. The symbol is derived from a Chinese character.
 ??  ?? Sue SavageRumb­augh was among the first psychologi­sts to study bonobo cognition; for more than three decades, she was immersed within one
group.
Sue SavageRumb­augh was among the first psychologi­sts to study bonobo cognition; for more than three decades, she was immersed within one group.

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