Book Review: Out on a Limb

Books and recommendations from Scientific American

Join Our Community of Science Lovers!


On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


Out on a Limb: What Black Bears Have Taught Me about Intelligence and Intuition
by Benjamin Kilham
Chelsea Green Publishing, 2013

Nearly 20 years ago, after dyslexia derailed his hopes for a scientific career, Kilham found another way to perform research, rearing and closely observing orphaned black bear cubs on his New Hampshire farm. He had “no reputation to worry about,” no hypothesis to prove; he simply raised cubs and watched over them through their reintroduction to the wild. As detailed in this book, his work led him to discover a previously overlooked scent receptor on the roof of each black bear's mouth (which he coined a “Kilham organ”) and to challenge the common view of bears as solitary, unsophisticated creatures. In the tradition of Jane Goodall's chimp studies, Kilham's analyses suggest that bears are capable of surprising altruism and cooperation and perhaps even long-term planning and symbolic thought. Out on a Limb reveals not only the inner lives of bears in poignant detail but also Kilham's deep, abiding respect and love for these sometimes savage, often gentle beasts.

Lee Billings is a science journalist specializing in astronomy, physics, planetary science, and spaceflight and is senior desk editor for physical science at Scientific American. He is author of a critically acclaimed book, Five Billion Years of Solitude: The Search for Life Among the Stars, which in 2014 won a Science Communication Award from the American Institute of Physics. In addition to his work for Scientific American, Billings’s writing has appeared in the New York Times, the Wall Street Journal, the Boston Globe, Wired, New Scientist, Popular Science and many other publications. Billings joined Scientific American in 2014 and previously worked as a staff editor at SEED magazine. He holds a B.A. in journalism from the University of Minnesota.

More by Lee Billings
Scientific American Magazine Vol 309 Issue 5This article was published with the title “Out on a Limb” in Scientific American Magazine Vol. 309 No. 5 (), p. 78
doi:10.1038/scientificamerican1113-78d

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe