Global Warming Trends

Ecological Footprints

Julie Kerr Casper, Ph.D.

ETFacts On File

An imprint oflnfobase Publishing

GLOBAL WARMING TRENDS: Ecological Footprints

Copyright © 2009 by Julie Kerr Casper, Ph.D.

All rights reserved. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval systems, without permission in writing from the publisher. For information contact:

Facts On File, Inc. An imprint of Infobase Publishing 132 West 31st Street New York NY 10001

Library of Congress Cataloging-in-Publication Data

Casper, Julie Kerr. Global warming trends : ecological footprints / Julie Kerr Casper.

p. cm.— (Global warming) Includes bibliographical references and index. ISBN-13: 978-0-8160-7261-3 (hardcover) ISBN-10: 0-8160-7261-2 (hardcover) ISBN-13: 978-1-4381-2608-1 (e-book) 1. Paleoclimatology. 2. Global warming. I. Title. QC884.C37 2009

551.6—dc22 2008046358

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Text design by Erik Lindstrom

Illustrations by Melissa Ericksen and Sholto Ainslie

Photo research by the author

Printed in the United States of America

This book is printed on acid-free paper.

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