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.

    Deliberately hiding from the outside world, they are the unconquered, the last survivors of an ancient culture that predates the arrival of Columbus in the New World.  In this gripping first-person account of adventure and survival, author Scott Wallace chronicles an expedition into the Amazon’s uncharted depths, discovering the rainforest’s secrets while moving ever closer to a possible encounter with one such tribe—the mysterious flecheiros, or “People of the Arrow,” seldom-glimpsed warriors known to repulse all intruders with showers of deadly arrows. On assignment for National Geographic, Wallace joins Brazilian explorer Sydney Possuelo at the head of a thirty-four-man team that ventures deep into the unknown in search of the tribe. Possuelo’s mission is to protect the Arrow People. But the information he needs to do so can only be gleaned by entering a world of permanent twilight beneath the forest canopy.Danger lurks at every step as the expedition seeks out the Arrow People even while trying to avoid them. Along the way, Wallace uncovers clues as to who the Arrow People might be, how they have managed to endure as one of the last unconquered tribes, and why so much about them must remain shrouded in mystery if they are to survive. Laced with lessons from anthropology and the Amazon’s own convulsed history, and boasting a Conradian cast of unforgettable characters—all driven by a passion to preserve the wild, but also wracked by fear, suspicion, and the desperate need to make it home alive—The Unconquered reveals this critical battleground in the fight to save the planet as it has rarely been seen, wrapped in a page-turning tale of adventure.

    While his mate is off swimming in the ocean and catching loads of fish, he stands around in the freezing cold with an egg on his feet for two whole months, keeping it warm and waiting for it to hatch. This charming, oversize picture book is full of fabulous facts about nature’s most devoted dad.

    To get these images, Wechsler sat in a pond wearing waders, went out night after night in search of toads, and cut his own glass to make a home aquarium. The resulting photos reveal metamorphosis in extreme close-up as readers have never seen it before.Budding naturalists will be transfixed by this unprecedented peek into the secrets of tadpole transformation. DemystifyingA book that encourages observation and conservation and may start some young biologists off on their own lifelong quests to understand animals -- Kirkus Reviews, starred review A fascinating look at toad development -- Booklist, starred reviewSuitable for libraries needing to bolster their early nonfiction collections -- School Library JournalA remarkable visual chronicle of an easily overlooked creature -- Bulletin of the Center for Children's BooksChicago Public Library's 2017 Best of the Best Books selection

    In the winter of 1925, Nome, Alaska, was hit by an unexpected and deadly outbreak of diphtheria. Officials immediately quarantined the town, but the only cure for the community of more than 1,400 people was antitoxin serum and the nearest supply was in Anchorage—hundreds of miles of snowbound wilderness away. The only way to get it to Nome was by dogsled. Twenty teams braved subzero temperatures and blizzard conditions to run over 600 miles in six days in a desperate relay race that saved the people of Nome. Several of the dogs, including Togo and Balto, became national heroes. Today their efforts, and those of the courageous mushers, are commemorated every March by the Iditarod Trail Sled Dog Race. Jon Van Zyle’s stunning oil paintings capture the brutal conditions, pristine wilderness, and sheer guts and determination demonstrated by the heroic mushers and dogs.

    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.

    Much like human families, tree parents live together with their children, communicate with them, and support them as they grow, sharing nutrients with those who are sick or struggling and creating an ecosystem that mitigates the impact of extremes of heat and cold for the whole group. As a result of such interactions, trees in a family or community are protected and can live to be very old. In contrast, solitary trees, like street kids, have a tough time of it and in most cases die much earlier than those in a group.Drawing on groundbreaking new discoveries, Wohlleben presents the science behind the secret and previously unknown life of trees and their communication abilities; he describes how these discoveries have informed his own practices in the forest around him. As he says, a happy forest is a healthy forest, and he believes that eco-friendly practices not only are economically sustainable but also benefit the health of our planet and the mental and physical health of all who live on Earth.

    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.

    A collection of thoughts, essays, stories, and profiles from nature provides a look at such different places as the central Amazon, the South Pacific, and Cincinnati, detailing such adventures as kayaking on a Class V river in Chile and tracing the spread of the Ebola virus.

    There are so many different kinds of birds—and those birds build so many different kinds of nests to keep their babies cozy. With playful, bouncy rhyme, Jennifer Ward explores nests large and small, silky and cottony, muddy and twiggy—and all the birds that call them home!

    In the process, the abyss is being revealed as perhaps the most amazing part of our planet, its topography even more varied and extreme than its landmass counterpart.Teeming with unsuspected life, an extraordinary, interconnected ecosystem deep below the waves has a huge effect on our daily lives, influencing climate and weather systems, with the potential for much more--good or bad, depending on how it is exploited. Currently, the fantastic creatures that live in the deep--many of them incandescent in a world without light--and its formations capture and trap vast quantities of carbon that would otherwise poison our atmosphere, and novel bacteria as yet undiscovered hold the promise of potent new medicines. Yet the deep also holds huge mineral riches lusted after by nations and corporations; mining them could ultimately devastate the planet, compounded by the deepening impacts of ubiquitous pollutants and rampant overfishing.Eloquently and passionately, the author of Spirals in Time and Eye of the Shoal brings to life the majesty and mystery of an alien realm that nonetheless sustains us, while urgently making clear the price we could pay if it is further disrupted. The Brilliant Abyss is at once a revelation and a clarion call to preserve this vast unseen world.

    Tomie dePaola--best-selling author of Strega Nona, Quiet, and many others--knows a lot about clouds. He also knows a lot about what people think of them.Some people see animals and pictures in clouds. The ancient Greeks believed that Hermes, the messenger of the gods, once stole the sun's cattle, which were clouds.In this unique picture book, Tomie introduces some of the most common types of clouds, as well as the myths and legends inspired by their shapes. Simple, whimsical illustrations show the variations in shape and color that herald changes in the weather.This book will tell you many things about clouds we bet you didn't know. Filled with his signature humor and gentle illustrations, Tomie dePaola's approach to nonfiction is like no other.A Reading Rainbow book.

    Jane Goodall was a young secretarial school graduate when the legendary Louis Leakey chose her to undertake a landmark study of chimpanzees in the world. This paperback edition contains 80 photographs and in introduction by Stephen Jay Gould.

    In 2015, Noah Strycker set himself a lofty goal: to become the first person to see half the world’s birds in one year. For 365 days, with a backpack, binoculars, and a series of one-way tickets, he traveled across forty-one countries and all seven continents, eventually spotting 6,042 species—by far the biggest birding year on record.This is no travelogue or glorified checklist. Noah ventures deep into a world of blood-sucking leeches, chronic sleep deprivation, airline snafus, breakdowns, mudslides, floods, war zones, ecologic devastation, conservation triumphs, common and iconic species, and scores of passionate bird lovers around the globe. By pursuing the freest creatures on the planet, Noah gains a unique perspective on the world they share with us—and offers a hopeful message that even as many birds face an uncertain future, more people than ever are working to protect them.

    A concise main text highlights how feathers are not just for flying. More curious readers are invited to explore informative sidebars, which underscore specific ways each bird uses its feathers for a variety of practical purposes. A scrapbook design showcases life-size feather illustrations.