"Once you are aware of the wonder and beauty of earth, you will want to learn about it," wrote Rachel Carson, the pioneering environmentalist. She wrote Silent Spring, the book that woke people up to the harmful impact humans were having on our planet.

    But do you know about the mathematical genius who made sure that Apollo 13 returned safely home?As a child, Katherine Johnson loved to count. She counted the steps on the road, the number of dishes and spoons she washed in the kitchen sink, everything! Boundless, curious, and excited by calculations, young Katherine longed to know as much as she could about math, about the universe.From Katherine's early beginnings as a gifted student to her heroic accomplishments as a prominent mathematician at NASA, this is the story of a groundbreaking American woman who not only calculated the course of moon landings but, in turn, saved lives and made enormous contributions to history.

    It melts into water and then vanishes! The ice cube changes from solid to liquid to gas. . . . Read on to find out more about the three states of matter.

    Her brother, Clive Campbell, spun the records. He had a new way of playing the music to make the breaks—the musical interludes between verses—longer for dancing. He called himself DJ Kool Herc and this is When the Beat Was Born. From his childhood in Jamaica to his youth in the Bronx, here's how Kool Herc came to be a DJ, how kids in gangs stopped fighting in order to breakdance, and how the music he invented went on to define a culture and transform the world.

    New York City in the 1860s was a mess: crowded, disgusting, filled with garbage. You see, way back in 1860, there were no subways, just cobblestone streets. That is, until Alfred Ely Beach had the idea for a fan-powered train that would travel underground. On February 26, 1870, after fifty-eight days of drilling and painting and plastering, Beach unveiled his masterpiece—and throngs of visitors took turns swooshing down the track. The Secret Subway will wow readers, just as Beach’s underground train wowed riders over a century ago.

    This is the story of Dinosaur Lady.Mary Anning loved scouring the beach near her home in England for shells and fossils. She fearlessly climbed over crumbling cliffs and rocky peaks, searching for new specimens. One day, something caught Mary's eye.Bones. Dinosaur Bones.Mary's discoveries rocked the world of science and helped create a brand-new field of study: paleontology. But many people believed women couldn't be scientists, so Mary wasn't given the credit she deserved. Nevertheless, Mary kept looking and learning more, making discoveries that reshaped scientific beliefs about the natural world.Dinosaur Lady is a beautiful and brilliant picture book that will enlighten children about the discovery of the dinosaurs and the importance of female scientists. It also includes a timeline of Mary Anning's life and lots of fantastic fossil facts!

    On a cold January day in 2017, nearly two months before her due date, Nile hippopotamus Bibi gave her keepers at the Cincinnati Zoo & Botanical Garden a big (little) surprise - a tiny newborn hippo, no bigger than a football.  The first premature hippo born and raised in captivity, baby Fiona was an underdog from the start:  she couldn't nurse, she couldn't stay hydrated, and she wasn't thriving. But the staff at the zoo knew they could save her.  It would take creative thinking and teamwork. They would have to study the makeup of hippo milk for the first time ever and reach out to medical colleagues, including a team at the local Children's Hospital with superior vein-finding skills,  to ensure that Fiona would begin to gain weight and become healthy. When Fiona began to thrive, her star began to rise, and soon she became an internet sensation, her picture and videos garnering thousands and thousands of likes and fans on Instagram and Facebook.  Now a Fiona appearance at the Zoo mimics a Beatles concert.  What made this little, now big, hippo such a big hit with people all over the world?  And what's in store for her and her family in the future?

    He was such a daydreamer that people called him a blockhead.When Leonardo grew up and traveled the world, he was inspired by the numbers used in different countries. Then he realized that many things in nature, from the number of petals on a flower to the spiral of a nautilus shell, seem to follow a certain pattern. The boy who was once teased for being a blockhead had discovered what came to be known as the Fibonacci Sequence!

    A lyrical creation tale of the Florida Everglades with stunning landscapes by Wendell Minor.

    In this fun and fascinating nonfiction picture book, join world-renowned photographers and biologists on their close encounters with the curious creatures that make their own light. Author’s note and bibliography included.

    When other elephants moved in and developed close friendships, only Tarra remained independent? until the day she met a stray mixed-breed dog named Bella.It was love at first sight as this unlikely duo became inseparable. They ate together, slept together, and even understood each other's language. And when Bella suffered a severe spinal injury, Tarra stayed by her side and was there for her until Bella regained her health.Brilliant color photographs of Tarra and Bella at home in the Elephant Sanctuary deftly illustrate this inspiring story of companionship, and an informative note about the Sanctuary provides a great resource for parents and teachers.

    Here is the best and worst of any hike: from picnics to puffing and panting, deer-sighting to detours. Featuring a glossary, a sketchbook by one of the characters, abundant labels throughout, and scientific backmatter.

    That’s what everyone wonders when they see Niagara . . . How close will their courage let them get to it? At the turn of the nineteenth century, a retired sixty-two-year-old charm school instructor named Annie Edson Taylor, seeking fame and fortune, decided to do something that no one in the world had ever done before—she would go over Niagara Falls in a wooden barrel. Come meet the Queen of the Falls and witness with your own eyes her daring ride!

    Fun and informative back matter takes the shape of an interview so that readers learn more right from the bird's bill. Ken Pak's lively illustrations, paired with Rita Gray's words, render a visual and sonorous picture book to be enjoyed by young naturalists.

    Stunning, realistic illustrations celebrate the beauty of these mysterious creatures as readers learn important facts through an engaging and fascinating story. The book also includes back matter with more in-depth information, a glossary, and further resources.