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This work was produced as a result of the contributions of:

  • The American Geosciences Institute (AGI), a nonprofit federation of 47 geoscientific and professional associations that represent more than 120,000 geologists, geophysicists, and other earth scientists.
  • The National Science Foundation (NSF). These materials were developed in part with the support of the National Science Foundation Grant No. #0242636. However, any opinions, findings, conclusions, statements, and recommendations expressed herein are
  • Copyright 2011 - American Geosciences Institute All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise without prior written permission of the copyright owner.