Children’s Biology Books

In this stunning non-fiction picture book, poetry and science come together with playful cut-paper illustrations to create a moving ode to the human heart and all that it does. Complete with illustrative diagrams and copious backmatter, this is a one-of-a-kind non-fiction picture book that gently guides readers through the various systems make up our most vital organ.

INTERVIEW:

Darshana Khiani: YOUR ONE AND ONLY HEART is amazing in how it takes a complex organ and breaks it down into chunks. What inspired you to write about the heart?

Rajani LaRocca: Ever since medical school, when I learned about the heart and how it works, I’ve been fascinated by this most vital organ. I wrote a first draft of this book way back in 2013 (!), and it was called “The Hardest Working Muscle.” It was written in prose and was over 800 words long. But it didn’t have a unifying theme or a hook.

I worked on this book on and off (mainly off) for years, but I couldn’t figure out how to write it. Then one day in 2018, I had a breakthrough: I discovered the theme I wanted to carry through the book. I realized I wanted to write about contrasting characteristics of the heart! Then I immediately decided to write about these characteristics in poetry—with several sets of paired poems. This made sense because to me, the beauty of poetry reflects the beauty of the human body.

DK: Well, you are one of the hardest-working writers I know. You do an amazing job at getting the main ideas across without getting bogged down in details. How did you master that balance? Also, the nerd in me wants to know why larger organisms have slower heart rates. I was surprised to learn that a mouse’s heart beats 310-840 beats/min while an elephant is only 30!

RL: I tried to focus on keeping the poetry simple enough for young kids to understand, yet interesting enough to capture their attention. There are plenty of facts that I reserved for the back matter so that the poetry could shine.

In terms of the answer to your question, are you ready to nerd out a bit? Smaller animals have higher surface area to volume ratio than larger ones. Because of this, smaller animals (especially warm-blooded animals like mammals and birds) lose heat much more quickly than their larger counterparts. So their hearts (which are smaller, too) need to beat faster to circulate more blood to offset the heat loss and maintain their body temperatures.

DK: Wow! Thank you for geeking out with me. Surface area … never would’ve guessed that. The book is divided into 15 poems, 7 pairs of antonym poems (yup, I made that up), and then a final stand-alone one. It is a unique structure, one I can’t say I’ve seen before. At what point in the writing process did you decide to organize the poems in this way?

RL: I designed those first 14 poems as “antonyms” or paired poems from the moment of that epiphany in 2018! When the book got acquired and my editor contacted illustrator Lauren Paige Conrad, Lauren came back with the incredible idea of using shades of different colors for each pair of poems. For example, “Singular” and “Cooperative” are in shades of red; “Simple” and “Complex” are in shades of orange; “Energetic” and “Relaxed” are in shades of yellow, and so on, resulting in a rainbow of colors! The back matter is also “color coded” to link back to the appropriate pages! Lauren works in cut paper collage, and it blows my mind how beautifully and precisely she depicted so many aspects of the heart with her art.

There are two poems at the end, and the very last poem brings everything together by restating the contrasting characteristics of the heart and noting that kids share the same characteristics themselves!

DK: I must admit the last poem took me by surprise since it is so matter-of-fact. I could almost hear the EKG flatline as I read the last words. Did you always know you wanted to end the story with this poem?

RL: Years ago, when I was at a writing retreat, I shared this manuscript with renowned nonfiction author Elizabeth Partridge. She loved it and advised me that I absolutely needed to include what happens when the heart stops beating. She said that death is something that children are curious about, and that by including it in a nonfiction book about the heart, I could demystify it and put it in perspective for kids from a scientific point of view. It took me a while to figure out how to write that poem; Lauren Paige Conrad’s illustration on that spread is absolutely perfect.

DK: Smart suggestion, and you presented it in such a matter-of-fact way. You’ve authored two novels-in-verse, MIRROR-TO-MIRROR and RED, WHITE, and WHOLE, and a rhyming non-fiction picture book, The SECRET CODE INSIDE YOU. Do you have any tips for writers who want to write lyrically?

RL: My first tip would be to understand what you want to say—for novels in verse, that means knowing at the very least the broad outlines of the plot and emotional arcs. And for nonfiction, that means compiling all the information you want to convey.

Next, I recommend getting in a “poetic mindset” by going out into nature, reading poetry, and/or listening to music.

And then you should just try writing the poems! Don’t worry too much about whether they’re any good.

When it’s time to edit: avoid cliches, use powerful words, condense and eliminate as much as possible, and endeavor to convey your message in a fresh or different way. I always read my poetry aloud in revision, because sometimes our ears are better than our eyes at noting when something isn’t quite right.

DK: What’s up next for you?

RL: YOUR ONE AND ONLY HEART is my fourth out of six books releasing this year!

Next up is THE SECRET OF THE DRAGON GEMS, an epistolary novel that I co-wrote with my friend Chris Baron. It’s about Tripti and Sam, two kids who meet at summer camp and find some unusual silvery rocks, which they each take home to California and Massachusetts. Then they start communicating via letter, email, texts, and video chats, because strange things keep happening, and they begin to wonder whether the rocks are more than just rocks. THE SECRET OF THE DRAGON GEMS releases on August 29!

My picture book MASALA CHAI, FAST AND SLOW, beautifully illustrated by Neha Rawat, releases on September 5. This is a story about a boy who likes to go fast and his grandfather, who likes to take things slow. Every day, they make masala chai together. One day, the grandfather sprains his ankle and can’t make masala chai, and the grandson decides to make some to cheer up his beloved grandfather . . . and hilarity ensues. This story is about learning to slow down and enjoy moments with those we love.

And next year on March 12 comes the release of my first middle grade fantasy, SONA AND THE GOLDEN BEASTS! Set in an Indian-inspired fantasy world, this story involves music and magic, and animals, but also contends with colonialism and who gets to tell history. I can’t wait to share it with the world!

DK: Yay for more books! We’ll be keeping a look out for them.