DIGITAL CREDITS |COVER: © KONRAD WOTHE/MINDEN PICTURES. TOC: (BACKGROUND) XUANYU HAN/MOMENT/GETTY IMAGES; (PHILIPPINES MARSH) GAB MEJIA; (BOG) LOUISE HEUSINKVELD/OXFORD SCIENTIFIC/GETTY IMAGES PLUS; (CARBON ILLUSTRATION) STEVE MCCRACKEN; (DRAGONFLY) J.P. LABUSCHAGNE; (MARSH) GAB MEJIA; (MANGROVE) J. BOONE KAUFFMAN. SPECIAL ISSUE: WETLANDS: (PITCHER PLANTS) CAROL DEMBINSKY/DEMBINSKY PHOTO ASSOCIATES/ALAMY STOCK PHOTO; (MARSH VILLAGE) GAB MEJIA; (MANGROVE) J. BOONE KAUFFMAN. WHAT YOU NEED TO KNOW: (ILLUSTRATION) PARAGORN DANGSOMBROOM/SHUTTERSTOCK; (DEVELOPMENT) CAMERON DAVIDSON/PHOTOGRAPHER’S CHOICE/GETTY IMAGES PLUS; (AGRICULTURE) ALEXANDER JOE/AFP/GETTY IMAGES; (INVASIVE SPECIES) SMITH COLLECTION/GADO/GETTY IMAGES; (CLIMATE CHANGE) DREW ANGERER/GETTY IMAGES NEWS. WETLANDS OF THE WORLD: (BOG) © BEN HALL/2020VISION/NPL/MINDEN PICTURES; (MOSS) © ALEX HYDE/NPL/MINDEN PICTURES; (FROG) DALE SUTTON/NATURE PICTURE LIBRARY/GETTY IMAGES PLUS; (MANGROVE & MANGROVE ROOTS) LAILA STERN/ALAMY STOCK PHOTO; (SCARLET IBIS) WILDLIFE GMBH/ALAMY STOCK PHOTO; (SWAMP) © TIM FITZHARRIS/MINDEN PICTURES; (TUPELO TREES) DANITA DELIMONT/ALAMY STOCK PHOTO; (CROCODILE) © JIROYA MINAKUCHI/MINDEN PICTURES; (MARSH) BLAINE HARRINGTON III/ALAMY STOCK PHOTO; (PAPYRUS) CAROLINE VANCOILLIE/ALAMY STOCK PHOTO; (EAGLE) © ANDREW SCHOEMAN/NIS/MINDEN PICTURES. BALANCE FOR THE BOGS: (BOG) LOUISE HEUSINKVELD/OXFORD SCIENTIFIC/GETTY IMAGES PLUS; (EMILY INSET) MARK THIESSEN/NG STAFF; (TREES & CLOUDS BACKGROUND) EMILY TONER; (EMILY IN FIELD) JEROME DELBRIDGE; (MOSS BOUQUET & SPHAGNUM) EMILY TONER; (MAPS) MAPPING SPECIALISTS, LTD; (BOG ILLUSTRATION) THE LIVING BOG (LIFE14 NAT/IE/000032)/ WWW.RAISEDBOGS.IE; (CUT PEAT, MAN WITH PEAT, BURNING PEAT) EMILY TONER; (EMILY WITH MAN) JEN GUYTON; (PLANT) EMILY TONER. CARBON SOURCES VS CARBON SINKS: (ILLUSTRATATION) STEVE MCCRACKEN; (BACKGROUND) GAB MEJIA; (HARVESTING PEAT) GABRIEL12/SHUTTERSTOCK; (BOG CROSS SECTION) STEPHEN BARNES/SHUTTERSTOCK WETLANDS CARBON ACTIVITY: (SWAMP) JOSEPH H. BAILY/NATIONAL GEOGRAPHIC IMAGE COLLECTION; (FOREST FIRE) YELANTSEVV/SHUTTERSTOCK; (SEAWEED) RICH CAREY/SHUTTERSTOCK; (FARM ANIMALS) CLEARVIEWIMAGES RF/ALAMY STOCK PHOTO; (PLANTS) JACKY PARKER PHOTOGRAPHY/MOMENT/GETTY IMAGES; (CARS) MILEHIGHTRAVELER/E+/GETTY IMAGES; (HANDS & SOIL) BLUEDOG STUDIO/SHUTTERSTOCK. FLYING FLOWERS OF RWANDA: (LAKE BURERA) ERASME UYIZEYE; (ERASME INSET) MARK THIESSEN/NG STAFF; (DRAGONFLY ILLUSTRATIONS) TOTIART/SHUTTERSTOCK; (BIG MAP) SAM GUILFORD/NATIONAL GEOGRAPHIC LABS; (EARTH INSET) MAPPING SPECIALISTS, LTD; (DRAGONFLY PHOTOS ALL) J.P. LABUSCHAGNE. PROTECTING THE MARSH: (GAB MEJIA PHOTO) MARK THIESSEN/NG STAFF; (EARTH) MAPPING SPECIALISTS, LTD; (ALL OTHER PHOTOS & PEAT FIRE VIDEO) GAB MEJIA MANAGING MANGROVES: (MANGROVE) J. BOONE KAUFFMAN; (ANGELO INSET) MARK THIESSEN/NG STAFF; (EARTH) MAPPING SPECIALISTS, LTD; (IBIS) MARTIN MECNAROWSKI/SHUTTERSTOCK; (WORMS) J. BOONE KAUFFMAN; (MAN IN TREE) ANGELO FRAGA BERNARDINO. THE FUTURE OF WETLANDS: SAVEJUNGLE/SHUTTERSTOCK. THE END PHOTO: JAMES ZIPP/SCIENCE SOURCE/GETTY IMAGES PLUS.