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In February 2000, while excavating his property in St. George, Utah, Sheldon Johnson turned over a piece of ground and discovered a fully preserved dinosaur footprint. That track was the first of many fossils to be uncovered. Five years later, the St. George Dinosaur Discovery Site at Johnson Farm was established to preserve one of the richest and oldest dinosaur-age fossil sites in Utah. Tracks in Deep Time presents, for the first time, an engaging, thoroughly readable account of the history, geology, and paleontology of this important site. Two hundred million years ago, Lake Dixie covered the site. Within its waters and along its shores, a diverse ecosystem of dinosaurs, early crocodylians, fishes, plants, and other organisms thrived, leaving behind thousands of footprints and other fossils preserved in layers of rock. Unusual fossils found here include the world’s largest collection of tracks left by swimming dinosaurs and one of only six traces known to have been made by a sitting, meat-eating dinosaur. With approachable text and lavish, full-color photographs and illustrations, Jerald Harris and Andrew Milner describe how geologists and paleontologists have painstakingly reconstructed a vivid “snapshot” of life from the Early Jurassic epoch.

No other continent on Earth has undergone such radical environmental changes as Antarctica. In its transition from rich biodiversity to the barren, cold land of blizzards we see today, Antarctica provides a dramatic case study of how subtle changes in continental positioning can affect living communities, and how rapidly catastrophic changes can come about. Antarctica has gone from paradise to polar ice in just a few million years, a geological blink of an eye when we consider the real age of Earth. Frozen in Time presents a comprehensive overview of the fossil record of Antarctica framed within its changing environmental settings, providing a window into a past time and environment on the continent. It reconstructs Antarctica's evolving animal and plant communities as accurately as the fossil record permits. The story of how fossils were first discovered in Antarctica is a triumph of human endeavour. It continues today with modern expeditions going out to remote sites every year to fill in more of the missing parts of the continent's great jigsaw of life.

How do economic conditions such as poverty, unemployment, inflation, and economic growth impact youth violence? Economics and Youth Violence provides a much-needed new perspective on this crucial issue. Pinpointing the economic factors that are most important, the editors and contributors in this volume explore how different kinds of economic issues impact children, adolescents, and their families, schools, and communities.Offering new and important insights regarding the relationship between macroeconomic conditions and youth violence across a variety of times and places, chapters cover such issues as the effect of inflation on youth violence; new quantitative analysis of the connection between race, economic opportunity, and violence; and the cyclical nature of criminal backgrounds and economic disadvantage among families. Highlighting the complexities in the relationship between economic conditions, juvenile offenses, and the community and situational contexts in which their connections are forged, Economics and Youth Violence prompts important questions that will guide future research on the causes and prevention of youth violence. Contributors: Sarah Beth Barnett, Eric P. Baumer, Philippe Bourgois, Shawn Bushway, Philip J. Cook, Robert D. Crutchfield, Linda L. Dahlberg, Mark Edberg, Jeffrey Fagan, Xiangming Fang, Curtis S. Florence, Ekaterina Gorislavsky, Nancy G. Guerra, Karen Heimer, Janet L. Lauritsen, Jennifer L. Matjasko, James A. Mercy, Matthew Phillips, Richard Rosenfeld, Tim Wadsworth, Valerie West, Kevin T. Wolff

How do economic conditions such as poverty, unemployment, inflation, and economic growth impact youth violence? Economics and Youth Violence provides a much-needed new perspective on this crucial issue. Pinpointing the economic factors that are most important, the editors and contributors in this volume explore how different kinds of economic issues impact children, adolescents, and their families, schools, and communities.Offering new and important insights regarding the relationship between macroeconomic conditions and youth violence across a variety of times and places, chapters cover such issues as the effect of inflation on youth violence; new quantitative analysis of the connection between race, economic opportunity, and violence; and the cyclical nature of criminal backgrounds and economic disadvantage among families. Highlighting the complexities in the relationship between economic conditions, juvenile offenses, and the community and situational contexts in which their connections are forged, Economics and Youth Violence prompts important questions that will guide future research on the causes and prevention of youth violence. Contributors: Sarah Beth Barnett, Eric P. Baumer, Philippe Bourgois, Shawn Bushway, Philip J. Cook, Robert D. Crutchfield, Linda L. Dahlberg, Mark Edberg, Jeffrey Fagan, Xiangming Fang, Curtis S. Florence, Ekaterina Gorislavsky, Nancy G. Guerra, Karen Heimer, Janet L. Lauritsen, Jennifer L. Matjasko, James A. Mercy, Matthew Phillips, Richard Rosenfeld, Tim Wadsworth, Valerie West, Kevin T. Wolff

Un livre pour les collégiens, pour leur faire comprendre tous les apports de la chimie dans le changement climatique et les nouvelles énergies.

Waldbauer introduces us to the aquatic insects that have colonized ponds, lakes, streams, and rivers, especially those in North America. Along the way we learn about the diverse forms these arthropods take, as well as their remarkable modes of life--and more than a little about the scientists who study them.

Children with obsessive-compulsive disorder (OCD) may suffer from obsessive thinking, use rituals to soothe their anxiety, and act compulsively in ways that are disruptive and sometimes harmful. As parents know all too well, OCD can greatly interfere with school, friends, and home life. In this important and much-needed Instant Help workbook, kids will learn to identify obsessions and compulsions, understand them, and use simple tools based in exposure and response prevention to cope with and overcome OCD.

Ten stories from the Tales of a Thousand and One Nights, including the well-known ones of Aladdin and the lamp, Ali Baba. and the forty thieves, and Sinbad the sailor.

Are you interested in using argument-driven inquiry for high school lab instruction but just aren’t sure how to do it? You aren’t alone. This book will provide you with both the information and instructional materials you need to start using this method right away. Argument-Driven Inquiry in Biology is a one-stop source of expertise, advice, and investigations.Because the authors are veteran teachers, they designed Argument-Driven Inquiry in Biology to be easy to use and aligned with today’s standards. The labs include reproducible student pages and teacher notes. The investigations will help your students learn the core ideas, crosscutting concepts, and scientific practices found in the Next Generation Science Standards. In addition, they offer ways for students to develop the disciplinary skills outlined in the Common Core State Standards.

Anthropology, politics, and history come together to form an insightful blend in this authoritative title covering kinship, tribalism, and nonurban cultures the world over. Both the theory and practical examples of tribal cultures are presented, with several chapters dedicated to the various schools of anthropological thought on nonurban societies, accompanied by a survey of tribal and indigenous cultures both historically and in modern times. American Indians, the indigenous peoples of South America, nomadic tribes of the Middle East, and Aboriginal Australians are a few of the societies explored in this extensive text.