In 1903, President Theodore Roosevelt joined naturalist John Muir on a trip to Yosemite. Camping by themselves in the uncharted woods, the two men saw sights and held discussions that would ultimately lead to the establishment of our National Parks.

    He just liked to collect frogs. Tyrone’s interest in science led him to Harvard University, and though he struggled at first, he found his calling in the research lab of an amphibian scientist.Meanwhile, scientists discovered that all around the globe, frogs were dying. The decline has many causes, including habitat loss and disease. Tyrone discovered that the most commonly used pesticide in the United States, atrazine, may also play a role. Tyrone tested atrazine on frogs in his lab at Berkeley. He found that the chemical caused some of the male frogs to develop into bizarre half-male, half-female frogs. What was going on? That’s what Tyrone wants to find out.

    Discover the incredible story of the search for life on Mars, told from the unique perspective of Curiosity, the Mars Rover sent to explore the red planet.Markus Motum's stylish illustrations and diagrams reveal how a robot travelled 350,000,000 miles to explore a planet where no human has ever been.

    The lyrical storytelling of award-winning author Donna Jo Napoli dramatizes the timeless tales of ancient Egypt in the year when Angelina Jolie will make Cleopatra a multimedia star. And just like the popular National Geographic Treasury of Greek Mythology, the stories in this book will be beautifully illustrated to bring ancient characters vividly to life. The stories are embellished with sidebars that provide historical, cultural, and geographic context and a mapping feature that adds to the fun and fascination. Resource notes and ample back matter direct readers to discover more about ancient Egypt. With its attractive design and beautiful narrative, this accessible treasury stands out from all other mythology titles in the marketplace.

    Manners give girls the skills they need to handle tough and tricky times in their life. From the dinner table to the telephone, manners give girls what they need to WOW the world.

    Your body is built to move.Lizzy Rockwell explains how your bones and muscles, heart and lungs, nerves and brain all work together to keep you on the go. Kids walk and skate and tumble through these pages with such exuberance that even sprouting couch potatoes will want to get up and bounce around—and that’s the ultimate goal. Studies show that American kids are becoming more sedentary and more overweight and that they carry these tendencies with them into adolescence and adulthood. Experts agree that we need to help kids make physical activity a life-long habit. Through education, information, and encouragement, this book aims to inspire a new generation of busy bodies!

    A publishing event!"If you decide to go to the moon," writes Faith McNulty, "read this book first. It will tell you how to get there and what to do after you land. The most important part tells you how to get home.Written in the second person, the text allows the reader to participate in every aspect of the journey, from packing ("don't forget your diary and plenty of food") to liftoff (at first you'll feel heavy; don't worry") to traveling through space (where "the moon glows like a pearl in the black, black sky"). The reader lands at the Sea of Tranquility, the site of the first lunar landing.

    Meet the environmentally friendly people who now proudly call their home Energy Island.At a time when most countries are producing ever-increasing amounts of CO2, the rather ordinary citizens of Samsø have accomplished something extraordinary--in just ten years they have reduced their carbon emissions by 140% and become almost completely energy independent. A narrative tale and a science book in one, this inspiring true story proves that with a little hard work and a big idea, anyone can make a huge step towards energy conservation.

    If you had reindeer hair, it could help you stay afloat in water. And if you had a porcupine's hair, no bully would ever bother you again! WHAT IF YOU HAD ANIMAL HAIR? is a follow-up to the adorable WHAT IF YOU HAD ANIMAL TEETH? Each spread will feature a photographic image of the animal and its hair on the left and an illustration of a child with that animal's hair on the right. As in ANIMAL TEETH, the illustrations will be humorous and will accompany informative text.

    In 1935, she also became the first woman to fly across the Pacific. From her early years to her mysterious 1937 disappearance while attempting a flight around the world, readers will find Amelia Earhart's life a fascinating story.

    But have you ever heard of a butterfly farm? How do you raise a butterfly? On a farm in Costa Rica, workers care for these delicate, winged creatures as they change from eggs to caterpillars to pupae. Like any other crop, the butterflies will eventually leave the farm. But where will they go? And just how do you ship a butterfly? Very carefully! To discover how it works, follow these butterflies on a remarkable journey!

    You'll learn how to overcome the unique issues that confront nighttime photographers and capture images of which you'll be proud. Co-author Jennifer Wu, an elite Canon "Explorer of Light" professional photographer, has become renowned for her ability to capture nighttime phenomena, from quarter-phase moon rises to shooting stars to the ephemeral Milky Way. this new guide reveals her methods and concentrates on photographing four principal subjects: stars as points of light, star trails, the moon, and twilight. these subjects share common photo techniques and considerations, but each also requires a distinct approach. Once captured, your digital images must be fi nished on the computer; coauthor and author of the bestselling Photography: Outdoors, James Martin, delves into the settings and procedures that elevate an image from mundane to striking. This clear and practical guide will help photographers of all levels portray the stunning spectacle of the night sky, preserving those special memories and moments from a life outdoors.

    Learning how flowers grow gives kids beautiful building blocks of science and inquiry.In the launch of a new nonfiction picture book series, Rachel Ignotofsky's distinctive art style and engaging, informative text clearly answers any questions a child (or adult) could have about flowers.

    So what’s the big deal about them? Well, every head of every person you’ve ever seen has a skull inside. And that includes YOU!

    He may not be as mighty as a lion or as dangerous as a shark. He may be squat and brown. But never underestimate a beaver. I can almost hear you saying, "But aren't beavers just lumpy rodents with buck teeth and funny flat tails?" Yes, they are! And believe it or not, those buck teeth and funny flat tails are just a few of the things that make beavers extraordinary.