But there was a time when people hunted the otters almost to extinction. Without sea otters to eat them, an army of hungry sea urchins grew and destroyed entire kelp forests. Fish and other animals that depended on the kelp were lost, too. But when people protected the sea otters with new laws, their numbers began to recover, and so did the kelp forests. Susannah Buhrman-Deever offers a beautifully written account of a trophic cascade, which happens when the removal of a single element affects an entire habitat. Asides that dig deeper are woven throughout Matthew Trueman’s dynamic illustrations, starring a raft of charismatic sea otters. Back matter includes more information about sea otters and kelp forests, including their importance and current status, the effects of the international fur trade on indigenous peoples, and a list of books and websites for readers who wish to continue to explore.

    And, it's true, many of them do. But Paul Erdos never followed the usual path. At the age of four, he could ask you when you were born and then calculate the number of seconds you had been alive in his head. But he didn't learn to butter his own bread until he turned twenty. Instead, he traveled around the world, from one mathematician to the next, collaborating on an astonishing number of publications. With a simple, lyrical text and richly layered illustrations, this is a beautiful introduction to the world of math and a fascinating look at the unique character traits that made "Uncle Paul" a great man.

    Get the buzz on bugs in this picture book from Angela DiTerlizzi!Grab your magnifying glass!Find your field guide!And come hop, hide, swim, and glidethrough this buggy backyard world! Featuring insects including butterflies and moths, crickets and cicadas, bumblebees and beetles, this zippy rhyming exploration of backyard-bug behavior is sure to have insect enthusiasts of all ages bugging out with excitement!

    purple mountains’ majesty, mauvelous, jungle green, razzmatazz… What child doesn't love to hold a crayon in their hands?  But children didn't always have such magical boxes of crayons. Here’s the true story of an inventor who so loved nature’s vibrant colors that he found a way to bring the outside world to children – in a box for only a nickel!

    Open 365 days a year and unrestricted by the constraints of physical space, each title in this series is organized into galleries that display more than 200 full-color specimens accompanied by lively, informative text. Offering hours of learning, this first title within the series "Animalium" presents the animal kingdom in glorious detail with illustrations from Katie Scott, an unparalleled new talent.

    In this lovely biography, poetic text and gorgeous paintings combine to create a portrait of Jacques Cousteau that is as magical as it is inspiring.

    Who was Grace Hopper? A software tester, workplace jester, cherished mentor, ace inventor, avid reader, naval leader—AND rule breaker, chance taker, and troublemaker. Grace Hopper coined the term “computer bug” and taught computers to “speak English,” and throughout her life succeeded in doing what no one had ever done before. Delighting in difficult ideas and in defying expectations, the insatiably curious Hopper truly is “Amazing Grace” . . . and a role model for science- and math-minded girls and boys.

    Through perilous weather and river rushes, the canoe and her captain survive and maneuver their way down the river back home.River is an outstanding introduction to seeing the world through the eyes of a young explorer and a great picture book for the STEAM curriculum.Maps and information about the Hudson River and famous landmarks are included in the back of the book.

    It's a math class you'll never forget.This classic picture book is an ALA Notable Book, a Reading Rainbow Feature Selection, and a Boston Globe/Horn Book Honor Book for Illustration.The repackage of this fun look at math concepts includes a letter from the author that features several ways for children to find a million everyday things.

    Inky had been getting used to his new environment, but the staff quickly figured out that he had to be kept amused or he would get bored. Then one night in 2016 Inky, about the size of a basketball, decided he'd had enough. He slithered eight feet across the floor and down a drainpipe more than 160 feet long to his home in the sea.

    He protected roots through harsh winters, so plants could be reborn in the spring. He trimmed flowers, spread soil, studied life cycles. And it was in this very place that George’s love of nature sprouted into something so much more—his future.

    Bison? They're banned! Tigers? Taboo! Say good-bye to the gnu, cheerio to the cheetah, and peace to the panda.The world of Lesser Spotted Animals STARTS HERE!Find out all about the amazing animals you need to know but never get to see, from the numbat to the zorilla, and everything in between.

    When a professor discovered that the homework sent to him under a male pen name came from a woman...nothing stopped Sophie. And when she tackled a math problem that male scholars said would be impossible to solve...still, nothing stopped Sophie.For six years Sophie Germain used her love of math and her undeniable determination to test equations that would predict patterns of vibrations. She eventually became the first woman to win a grand prize from France's prestigious Academy of Sciences for her formula, which laid the groundwork for much of modern architecture (and can be seen in the book's illustrations).Award-winning author Cheryl Bardoe's inspiring and poetic text is brought to life by acclaimed artist Barbara McClintock's intricate pen-and-ink, watercolor, and collage illustrations in this true story about a woman who let nothing stop her.

    Just as important, the story doesn’t gender people or body parts, so most parents and families will find that it leaves room for them to educate their child without having to erase their own experience.

    In pictures and text, master artist Robert Byrd documents Franklin's numerous and diverse accomplishments, from framing the Constitution to creating bifocals.