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Explorer VOL. 14 NO. 5 VOL. 9 NO. 4


DEVELOPMENT TEAM DEVELOPMENT TEAM


Vice President and Publisher: Francis Downey


Art Director and Designer: Karen Thompson Senior Editor: Macon Morehouse Young Explorer Editor: Corinne Rucker Explorer Editor: Brenna Maloney Media Editor: Shannon Hibberd Permissions Editor: Jean Cantu Production Specialist: Dreama Karnes-Bynane


Vice President and Publisher: Francis Downey


Manufacturing & Quality Management: Rachel Faulise


Director of Production: Nicole Elliott


PUBLISHED BY NATIONAL GEOGRAPHIC LEARNING


PUBLISHED BY NATIONAL GEOGRAPHIC LEARNING


Read three thrilling articles in our next issue of


National Geographic Explorer.


Learn how some things make their own light in “Flash, Glimmer, and Glow.”


Join some astronauts in their out-of-this-world laboratory in “Space Lab.”


See how you can work with real scientists to make real discoveries in “It’s Your Turn.”


NATIONAL GEOGRAPHIC EXPLORER (ISSN 1541-3357) is published seven times during the school year—September, October, November–December, January–February, March, April, May— by National Geographic Learning, 1125 17th Street NW, Washington, D.C. 20036. Postmaster: Please send address changes to NATIONAL GEOGRAPHIC EXPLORER, PO Box 4002913, Des Moines, IA 50340–2913. Periodical postage paid at Washington, D.C., and additional mailing offi ces.


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In the U.S., call 1-888-915-3276 In Australia and New Zealand, + 61 2 8005 6889


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Copyright © 2015 National Geographic Learning. All Rights Reserved. Reproduction of the whole or any part of the contents of NATIONAL GEOGRAPHIC EXPLORER without written permission is prohibited. National Geographic, NATIONAL GEOGRAPHIC EXPLORER, and the Yellow Border are trademarks of the National Geographic Society.


PHOTO CREDITS COVER: © JIM AND JAMIE DUTCHER; PAGES 2-3 © JIM AND JAMIE DUTCHER; PAGES 4, 7, 8 (ART) YYANG/SHUTTERSTOCK; PAGES 4-7, 9 JIM AND JAMIE DUTCHER/NATIONAL GEOGRAPHIC CREATIVE; PAGES 10-11 © HIDEO KURIHARA/ALAMY; PAGE 12 © CHRISTIAN KOBER/ROBERT HARDING WORLD IMAGERY/ CORBIS; PAGE 13 (LEFT) GARY HINCKS/SCIENCE SOURCE; PAGE 13 (RIGHT) MOPIC/SHUTTERSTOCK; PAGE 14 JIJI PRESS/GETTY IMAGES; PAGE 15 (TOP) JOSÉ ANTONIO PEÑAS/SCIENCE SOURCE; PAGE 15 (BOTTOM) TREKANDSHOOT/SHUTTERSTOCK; PAGES 16-17 DENNIS FLAHERTY/SCIENCE SOURCE; PAGES 18-23 (BACKGROUND) © CORBIS; PAGES 18-19 CLAUS LUNAU/SCIENCE SOURCE; PAGE 19 © MIKE HOLLINGSHEAD/CORBIS; PAGE 21 (TOP) © SEBASTIAN OPITZ/ NO/NOVARC/CORBIS; PAGE 21 (BOTTOM) DOUG ALLAN/GETTY IMAGES; PAGE 22 DONOVAN REESE/GETTY IMAGES; PAGE 23 (TOP) © WITTA PRIESTER; PAGE 23 (BOTTOM) © CRAIG TUTTLE/CORBIS; PAGE 24 © JURGEN FREUND/NATUREPL.COM.


Cover: a wolf 01/15/QGL/1


Cover: a gecko 09/14/QGL/1 ISBN: 9781305472129


ISBN: 9781305471993


Keep exploring the stories from NATIONAL GEOGRAPHIC EXPLORER with our Home Learning App in the Apple App Store.


Find your online Teacher’s Guide, interactive whiteboard lessons, and digital editions at ngexplorer.cengage.com.


Copyright © 2015 National Geographic Learning. All Rights Reserved. Reproduction of the whole or any part of the contents of NATIONAL GEOGRAPHIC YOUNG EXPLORER without written permission is prohibited. National Geographic, NATIONAL GEOGRAPHIC YOUNG EXPLORER, and the Yellow Border are trademarks of the National Geographic Society.


NATIONAL GEOGRAPHIC YOUNG EXPLORER (ISSN 1930-8116) is published seven times during the school year—September, October, November–December, January–February, March, April, May— by National Geographic Learning, 1125 17th Street NW, Washington, D.C. 20036. Postmaster: Please send address changes to NATIONAL GEOGRAPHIC YOUNG EXPLORER, PO Box 4002913, Des Moines, IA 50340–2913. Periodical postage paid at Washington, D.C., and additional mailing offi ces.


Art Director and Designer: Karen Thompson Senior Editor: Macon Morehouse Young Explorer Editor: Corinne Rucker Explorer Editor: Brenna Maloney Media Editor: Shannon Hibberd Permissions Editor: Jean Cantu Production Specialist: Dreama Karnes-Bynane Director of Production: Nicole Elliott


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