“Could You Be an Animal If You Didn’t Have Any Bones?”

Illustration and text by Sara Levine/T.S Spookytooth

In some of the best children’s books, dandelions turn into stars, sharks and radishes merge, and pancakes fall from the sky. No one would confuse these magical tales for descriptions of nature. Small children can differentiate between “the real world and the imaginary world,” as psychologist Alison Gopnik has written. They just “don’t see any particular reason for preferring to live in the real one.”

Children’s nuanced understanding of the not-real surely extends to the towering heap of books that feature dinosaurs as playmates who fill buckets of sand or bake chocolate-chip cookies. The imaginative play of these books may be no different to kids than radishsharks and llama dramas.

But as a parent, friendly dinos never steal my heart. I associate them, just a little, with old creationist images of animals frolicking near the garden of Eden, which carried the message that dinosaurs and man, both created by God on the sixth day, co-existed on the Earth until after the flood. (Never mind the evidence that dinosaurs went extinct millions of years before humans appeared.) The founder of the Creation Museum in Kentucky calls dinosaurs “missionary lizards,” and that phrase echoes in my head when I see all those goofy illustrations of dinosaurs in sunglasses and hats.

I’ve been longing for another kind of picture book: one that appeals to young children’s wildest imagination in service of real evolutionary thinking. Such a book could certainly include dinosaur skeletons or fossils. But Bone by Bone, by veterinarian and professor Sara Levine, fills the niche to near perfection by relying on dogs, rabbits, bats, whales, and humans. Levine plays with differences in their skeletons to groom kids for grand scientific concepts.  

Bone by Bone asks kids to imagine what their bodies would look like if they had different configurations of bones, like extra vertebrae, longer limbs, or fewer fingers. “What if your vertebrae didn’t stop at your rear end? What if they kept going?” Levine writes, as a boy peers over his shoulder at the spinal column. “You’d have a tail!”

“What kind of animal would you be if your leg bones were much, much longer than your arm bones?” she wonders, as a girl in pink sneakers rises so tall her face disappears from the page. “A rabbit or a kangaroo!” she says, later adding a pike and a hare. “These animals need strong hind leg bones for jumping.” Levine’s questions and answers are delightfully simple for the scientific heft they carry.

With the lightest possible touch, Levine introduces the idea that bones in different vertebrates are related and that they morph over time. She starts with vertebrae, skulls and ribs. But other structures bear strong kinships in these animals, too. The bone in the center of a horse’s hoof, for instance, is related to a human finger. (“What would happen if your middle fingers and the middle toes were so thick that they supported your whole body?”) The bones that radiate out through a bat’s wing are linked to those in a human hand. (“A web of skin connects the bones to make wings so that a bat can fly.”) This is different from the wings of a bird or an insect; with bats, it’s almost as if they’re swimming through air.

Illustration and text by Sara Levine/T.S Spookytooth

Of course, human hands did not shape-shift into bats’ wings, or vice versa. Both derive from a common ancestral structure, which means they share an evolutionary past. Homology, as this kind of relatedness is called, is among “the first and in many ways the best evidence for evolution,” says Josh Rosenau of the National Center for Science Education. Comparing bones also paves the way for comparing genes and molecules, for grasping evolution at the next level of sophistication. Indeed, it’s hard to look at the bat wings and human hands as presented here without lighting up, at least a little, with these ideas. So many smart writers focus on preparing young kids to read or understand numbers. Why not do more to ready them for the big ideas of science? Why not pave the way for evolution? (This is easier to do with older kids, with books like The Evolution of Calpurnia Tate and Why Don’t Your Eyelashes Grow?)

Courtesy Lerner Publishing Group

The whimsical illustrations in Bone by Bone, by T.S Spookytooth, also speak to imagination in its native tongue. The boys’ and girls’ bodies stretch and morph, and one little boy collapses into a puddle of mud with a baseball cap on top: “Could you be an animal if you didn’t have any bones at all?” the text asks. Answer: Yes! Just check out the starfish, the beetle, and the clam on the next pages. No didactic preaching here. Still other big ideas flash by wordlessly, like a vestigial hipbone in a whale. Vestigial structures, in case your child asks, also provide evidence of evolution, suggesting ways in which structures that were perhaps once useful no longer are.

Maybe it’s a shame that evolution skeptics are so busy with textbooks in Texas right now. If they had time, they might take exception to Bone by Bone, generating the kind of attention that could turn it into a best-seller. The book really ought to needle them: It prepares young minds for evolution without ever using the word, appealing to kids just starting out in school. If you’re a parent who thinks science matters, you’ll go for the provocation.

Source: http://www.slate.com/articles/double_x/family/2013/10/bone_by_bone_the_picture_book_that_will_show_your_kid_how_evolution_works.html
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