The Garbage Gang's picnic is invaded by ants! How do those little ants find their way around anyway? The gang meets a dog that tells them all about scent marking and animal communication, and suddenly it all makes scents!

How do ant colonies get anything done, when no one is in charge? An ant colony operates without a central control or hierarchy, and no ant directs another. Instead, ants decide what to do based on the rate, rhythm, and pattern of individual encounters and interactions--resulting in a dynamic network that coordinates the functions of the colony. Ant Encounters provides a revealing and accessible look into ant behavior from this complex systems perspective. Focusing on the moment-to-moment behavior of ant colonies, Deborah Gordon investigates the role of interaction networks in regulating colony behavior and relations among ant colonies. She shows how ant behavior within and between colonies arises from local interactions of individuals, and how interaction networks develop as a colony grows older and larger. The more rapidly ants react to their encounters, the more sensitively the entire colony responds to changing conditions. Gordon explores whether such reactive networks help a colony to survive and reproduce, how natural selection shapes colony networks, and how these structures compare to other analogous complex systems. Ant Encounters sheds light on the organizational behavior, ecology, and evolution of these diverse and ubiquitous social insects.

Rachel Friedman has always been the consummate good girl who does well in school and plays it safe, so the college grad surprises no one more than herself when, on a whim (and in an effort to escape impending life decisions), she buys a ticket to Ireland, a place she has never visited. There she forms an unlikely bond with a free-spirited Australian girl, a born adventurer who spurs Rachel on to a yearlong odyssey that takes her to three continents, fills her life with newfound friends, and gives birth to a previously unrealized passion for adventure. As her journey takes her to Australia and South America, Rachel discovers and embraces her love of travel and unlocks more truths about herself than she ever realized she was seeking. Along the way, the erstwhile good girl finally learns to do something she’s never done before: simply live for the moment.

Winner of the Association of American Publishers PROSE Award for Excellence in Biological and Life Sciences A world-renowned researcher of animal behavior reveals the extraordinary orienteering skills of desert ants, offering a thrilling account of the sophisticated ways insects function in their natural environments. Cataglyphis desert ants are agile ultrarunners who can tolerate near-lethal temperatures when they forage in the hot midday sun. But it is their remarkable navigational abilities that make these ants so fascinating to study. Whether in the Sahara or its ecological equivalents in the Namib Desert and Australian Outback, the Cataglyphis navigators can set out foraging across vast expanses of desert terrain in search of prey, and then find the shortest way home. For almost half a century, Rüdiger Wehner and his collaborators have devised elegant experiments to unmask how they do it. Through a lively and lucid narrative, Desert Navigator offers a firsthand look at the extraordinary navigational skills of these charismatic desert dwellers and the experiments that revealed how they strategize and solve complex problems. Wehner and his team discovered that these insect navigators use visual cues in the sky that humans are unable to see, the Earth’s magnetic field, wind direction, a step counter, and panoramic “snapshots” of landmarks, among other resources. The ants combine all of this information to steer an optimal course. At any given time during their long journey, they know exactly where to go. It is no wonder these nimble and versatile creatures have become models in the study of animal navigation. Desert Navigator brings to light the marvelous capacity and complexity found in these remarkable insects and shows us how mini brains can solve mega tasks.

Trips for nature lovers that won't strain the muscles.

High-interest, nonfiction articles help students learn about science and social studies topics while developing skills in reading comprehension. Each story is followed by questions that cover main idea, details, vocabulary, and critical reasoning. The format is similar to that of standardized tests, so as students progress through the book s units, they are preparing for success in testing.