Using the insights of great mathematicians and endlessly observing the sky, he succeeded in confirming two things that altered human life forever: that there are more galaxies than our own, and that the universe is always expanding. Hubble’s message to us is to find peace in the vastness of the mystery surrounding us, and to be curious. “We do now know why we are born into the world,” he said, “but we can try to find out what sort of world it is.”

    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.

    Perfect for fans of Mistakes that Worked and Girls Think of Everything.In a time when people believed flying was impossible, Joseph and Etienne Montgolfier proved that the sky wasn’t the limit. When most thought horseback was the only way to race, Bertha and Karl Benz fired up their engines. From the invention of the bicycle and the passenger steam locomotive, to the first liquid-fuel propelled rocket and industrial robot, inventors across the world have redefined travel. Filled with informative sidebars and colorful illustrations, this collective biography tells the story of the experiments, failures, and successes of visionaries who changed the way the world moves.

    This great read-aloud includes information (verified by NASA staff) about the ISS. Fact-filled and fun, this story will send young minds soaring.

    Owling invites young readers into the world of real-life owls, to learn about their fascinating behaviors and abilities.   Wildlife photojournalist and nature educator Mark Wilson presents a one-of-a-kind look into the mysterious lives of these distinctive birds. Dramatic images of the 19 owl species of North America nesting, flying, hunting, and catching prey are accompanied by information about the birds’ silent flight, remarkable eyes and ears, haunting calls, and fascinating night life. Kids will learn how to spot owls; identify their calls, plumage, and pellets; and even carry on a hooting conversation with a nearby owl.

    Perfect for reading on winter days, the book features photos of real snow crystals in their beautiful diversity. Snowflake-catching instructions are also included.

    Filled with archival photographs and amazing fact boxes, this groundbreaking series introduces young readers to some of history's most interesting and influential characters.Supports the Common Core State Standards.

    As a result, his body hasn't grown bigger and stronger as he's gotten older--it's gotten smaller and weaker instead. This hasn't stopped him from doing the things he enjoys (like eating pizza and playing sports and video games) with the people he loves, but it does mean that he routinely relies on his friends and family for help with everything from brushing his teeth to rolling over in bed.

    When Owen was stranded after the Dec 2004 tsunami, villagers in Kenya worked tirelessly to rescue him. Then, to everyone's amazement, the orphan hippo and the elderly tortoise adopted each other. Now they are inseparable, swimming, eating, and playing together. Adorable photos e-mailed from friend to friend quickly made them worldwide celebrities. Here is a joyous reminder that in times of trouble, friendship is stronger than the differences that too often pull us apart.

    As they gather nectar from flowers to make sweet honey, these bees also play an important role in pollination, helping some plants produce fruit. But large numbers of honeybees are disappearing every year . . . and no one knows why. Is a fungus killing them? Could a poor diet be the cause? What about changes to bees' natural habitat? In this real-life science mystery, scientists and beekeepers are working to answer these questions . . . and save the world's honeybees before it's too late.-- "Journal"

    Because she was going to study him, she decided to call him Alex--short for Avian Learning EXperiment. At that time, most scientists thought that the bigger the brain, the smarter the creature; they studied great apes and dolphins. African greys, with their walnut-sized "birdbrains," were pretty much ignored--until Alex. His intelligence surprised everyone, including Irene. He learned to count, add, and subtract; to recognize shapes, sizes, and colors; and to speak, and understand, hundreds of words. These were things no other animal could do. Alex wasn't supposed to have the brainpower to do them, either. But he did them anyway.Accompanied by Meilo So's stunning illustrations, Alex and Irene's story is one of groundbreaking discoveries about animal intelligence, hard work, and the loving bonds of a unique friendship.

    Using video links, IP Factly's Amazing Animal series has been designed to encourage and bolster independent reading. The animals are accompanied by pictures and facts plus video links so children can see the animals and how they behave.

    Keeping Earth a happy healthy place to live is important for everyone big and small. In this Earth science book for beginners, kids learn what makes our planet so uniquely special and how people can work together to keep it a healthy home. I Am Earth is a great way to start children at an early age to care for the environment by understanding why the environment is so important and what they can do to help keep nature in balance, like recycle, reuse and conserve. For all living creatures that call planet Earth home, every day is Earth Day! Bright, vivid illustrations will capture kids’ attention and keep learning fun. “Keep Earth a happy, healthy place to live!”

    Dual-layered text highlights how shells provide more than a protective home in this expository nonfiction exploration. The informative secondary text underscores characteristics specific to each shell. Elegant watercolor illustrations create a scrapbook feel, depicting children from around the world observing and sketching seashells across shores.

    Most people didn't even believe this city existed. But if Fawcett could find it, he would be rich and famous forever. This is the true story of one man's thrilling, dangerous journey into the jungle, and what he found on his quest for the lost city of Z.