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148 Rétthafar myndefnis Teikningar: Jón Baldur Hlíðberg Ljósmyndir Forsíðumynd: Claude Nuridsany & Marie Perennou / Science Photo Library Smámyndir á forsíðu, talið frá vinstri: Javier Trueba / MSF / Science Photo Library; Bernhard Edmaier / Science Photo Library; John Shaw / Science Photo Library Smámyndir á baksíðu, talið frá vinstri: Alfons Finnsson / MBL; Thomas Pullicino / iStockphoto ; Adrian Bicker / Science Photo Library Bls. 3 a.o., Hörður Kristinsson; bls. 3 a.n., Sergey Ilin / Dreamstime Bls. 4, Kristinn Ingvarsson / Mbl. Bls. 5, Djk / Dreamstime Bls. 7, Nancy Nehring / iStockphoto Bls. 8 t.v., DuncanWalker / iStockphoto; bls. 8 t.h., johnnyscriv / iStockphoto Bls. 9 a.o., Emilia Stasiak / iStockphoto; bls. 9 f.m., Dean Turner / iStockphoto; bls. 9 a.n., Peter Chigmaroff / Dreamstime Bls. 11, Mameev Dmitry / Dreamstime Bls. 12 a.o., Stefano Tiraboschi / iStockphoto; bls. 12 t.h. Vitali Dyatchenko / Dreamstime Bls. 13, Alfons Finnsson / Mbl. Bls. 15, NASA Bls. 16, Olena Zhuchkova / Dreamstime Bls. 17 a.o., Rui Saraiva / Dreamstime; bls. 17 f.m., Mikhail Surkov / Dreamstime; bls. 17 a.n., Fesus Robert / Dreamstime Bls. 18, Kristinn Ingvarsson /Mbl. Bls. 19 a.o., Gert Vrey / Dreamstime; bls. 19 a.n., Krzysztof Susarczyk / Dreamstime Bls. 22, MatsWibe Lund Bls. 23, Jóhann Óli Hilmarsson Bls. 24 a.o., Michael Flippo / Dreamstime; bls. 24 a.n., Hafdís Finnbogadóttir / Námsgagnastofnun Bls. 25, Bengt Ekman / N / IBL Bildbyrå Bls. 26 a.o., NordicPhotos; bls. 26 a.n., Daniela Spyropoulou / Dreamstime Bls. 27, Dieniti / Dreamstime Bls. 28, Jonnycwh / Dreamstime Bls. 29, Thomas Zenker / iStockphoto Bls. 30 a.o., Hörður Kristinsson; bls. 30 a.n., Hafdís Finnbogadóttir / Námsgagnastofnun Bls. 31, Valerie Crafter / iStockphoto Bls. 32, Jóhann Óli Hilmarsson Bls. 33 a.o., Enterprise Systems, Inc. Dba Virginia Hamrick Photography / Dreamstime; bls. 33 a.n. Einar Falur Ingólfsson /Mbl. Bls. 34, NateAbbott / iStockphoto Bls. 35 a.o., Darren Baker / Dreamstime; bls. 35 a.n., Hálfdan Ómar Hálfdanarson Bls. 36, Bluedeep / Dreamstime Bls. 37, Jóhann Óli Hilmarsson Bls. 38 a.o., Tupungato / Dreamstime; bls. 38 a.n., Birkir Fanndal / Mbl. Bls. 39 a.o., RAX / Ragnar Axelsson / Mbl.; bls. 39 a.n. Jóhann Óli Hilmarsson Bls. 41, ÞÖK /Mbl. Bls. 43, Joel Carillet / iStockphoto Bls. 44 a.o., Friðþjófur Helgason / Mbl.; bls. 44 a.n., Erlendur Guðmundsson Bls. 46, RAX / Mbl. Bls. 48, Kristinn Ingvarsson / Mbl. Bls. 49, Lars-Gunnar Magnusson / NO-pedagog Bls. 50 a.o., Icerock /Dreamstime, bls. 50 a.n., Jónas Erlendsson / Mbl. Bls. 51, Richard Carey / iStockphoto Bls. 54, Chhobi / Dreamstime Bls. 55, Antartis / Dreamstime Bls. 56, JohnWoodcock / iStockphoto Bls. 57 a.o., Árni Sæberg / Mbl.; bls. 57 a.n., Fckncg / Dreamstime Bls. 58, Maxim Chupashkin / iStockphoto; bls. 58 a.n. Patrick Landmann / Science Photo Library Bls. 59, Patrice Latron / Look At Sciences / Science Photo Library Bls. 60, Planetobserver / Science Photo Library Bls. 61, Peter Marlow / Magnum / IBL Bls. 62, SeaWiFS Project, NASA / Goddard Space Flight Center / Orbimage Bls. 63, Jim Edds / Science Photo Library bls. 64 a.o., Júlíus Sigurjónsson / Mbl.; bls. 64 a.n. Jón Helgason / Dreamstime Bls. 65 a.o., Nuttakit / Dreamstime; bls. 65 a.n., Windujedi / Dreamstime Bls. 66, Bernhard Edmaier / Science Photo Library Bls. 67, Fotoblitz / Stills / Gamma / IBL Bls. 68, NASA / GSFC Bls. 69, JazzIRT / iStockphoto Bls. 71, NordicPhotos Bls. 72, Gina Mills / Centre for Ecology & Hydrology Bls. 73, Eggert Jóhannesson / Mbl. Bls. 74, NASA Bls. 76, Júlíus Sigurjónsson / Mbl. Bls. 77, John Shaw / Science Photo Library Bls. 78 a.o., Philippehalle / Dreamstime; bls. 78 a.n., fstockfoto / Dreamstime Bls. 79 a.o., RAX / Ragnar Axelsson / Mbl.; bls. 79 a.n., Árni Sæberg / Mbl. Bls. 80, Bjarni Eiríksson / Mbl. Bls. 81, Planetary Visions Ltd. / Science Photo Library Bls. 82 a.o., Ulf Simonsson / Tiofoto / NordicPhotos; 82 a.n., Kai Zhang / Dreamstime Bls. 83, Beboy ltd. / iStockphoto Bls. 86, Alekso94 / Dreamstime Bls. 87, P.M. Motta & J. Van Blerkom / Science Photo Library Bls. 88, Bluestone / Science Photo Library Bls. 89 a.o., Wikimedia Commons Bls. 89 a.n., A. Barrington Brown / Science Photo Library Bls. 90, Philippe Plailly / Science Photo Library Bls. 92, Ft photography / Dreamstime Bls. 93, P.M. / Dept. Of anatomy / University LA SAPIENZA, Rome / Science Photo Library Bls. 94, CNRI / Science Photo Library Bls. 95 a.o., Eggert Jóhannesson / Mbl.; bls. 95 f.m., Kati1313 / Dreamstime; bls. 95 a.n., Monkey Business Images / Dreamstime Bls. 96, Kevin Russ / iStockphoto Bls. 97, Ian Hooton / Science Photo Library Bls. 98, Eye of Science / Science Photo Library Bls. 99, Wikimedia Commons Bls. 100, Goldenkb / Dreamstime Bls. 101 a.o., Joti / Science Photo Library; bls. 101 a.n., James H. Robinson / Science Photo Library Bls. 102, Thomas Pullicino / iStockphoto Bls. 103 a.o., Jesse / Science Photo Library; bls. 103 a.n., Paul Rapson / Science Photo Library Bls. 104, Bill Barksdale / Agstockusa / Science Photo Library Bls. 105, Ron Sutherland / Science Photo Library Bls. 106 a.o., Eric Isselée / iStockphoto; bls. 106 a.n., Susan Kuklin / Science Photo Library Bls. 107, Simon Fraser / Science Photo Library Bls. 108, NordicPhotos Bls. 109, Pasquale Sorrentino / Science Photo Library Bls. 110, Bonahoe / from So a simple beginning, MacMillan PC Bls. 111 a.o., Erling Ólafsson; bls. 111 a.n., The International Institute of Tropical Agriculture, Nigeria (IITA) Bls. 112, Courtesy Golden Rice Humanitarian Board Bls. 113, Mauro Fermariello / Science Photo Library Bls. 116, Ryan Brocklehurst / iStockphoto Bls. 117, Javier Trueba / MSF / Science Photo Library Bls. 118, Cathleen Abers-Kimball / iStockphoto Bls. 119 a.o., NordicPhotos; bls. 119 a.n., Science Source / Science Photo Library Bls. 120, Claude Nuridsany & Marie Perennou / Science Photo Library Bls. 121, Cordelia Mollot / Science Photo Library Bls. 122 a.o., Nataliia Sdobnikova / Dreamstime; bls. 122 a.n., Worakit Sirijinda / Dreamstime Bls. 123, Nigel Dennis / Science Photo Library Bls. 125 a.o., Valeriy Kirsanov / iStockphoto; bls. 125 a.n., Adrian Bicker / Science Photo Library Bls. 126, NASA Bls. 127 a.o., RAX / Mbl.; bls. 127 a.n., Nasa Bls. 128, Georgette Douwma / Science Photo Library Bls. 129, Michael Marten / Science Photo Library Bls. 132 a.o., Christian Jegou Publiphoto Diffusion / Science Photo Library Bls. 133, Jim Amos / Science Photo Library Bls. 134, Sergey Ilin / Dreamstime Bls. 138, Kell / Dreamstime Bls. 140 a.n., Mauricio Anton / Science Photo Library Bls. 141, Javier Trueba / MSF / Science Photo Library