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Thompson Pass, Alaska (DI01947) Photo by Zhenya Gallon
Glacier (DI00355)
Coral reef (DI02234) Photo by Kathy Krucker
Influence of El Niño on weather and climate (DI01900) Illustration by Steve Deyo
Moss--Tasmania (DI00635), Photo by Carlye Calvin
Moss--Tasmania (DI00637), Photo by Carlye Calvin
Arctic September sea ice extent (DI01898) Illustration by Steve Deyo
Effects of an increase in mean temperature (DI02412)
Noctilucent cloud (DI00146), Photo by Ben Fogle
Coral reef (DI02229) Photo by Kathy Krucker
Methane research:  logging (DI00049) Photo by Patrick Zimmerman
Methane research:  termite colony in the National Center of Atmospheric Research's Mesa Laboratory site (DI00038)
Dust storm over the Red Sea and Saudi Arabia, 1992 (DI02469)
Methane research:  forest burning (DI00039) Photo by Patrick Zimmerman
Methane research: termite colony in the National Center of Atmospheric Research's Mesa Laboratory site (DI00042)
Elephants in Sangha National Park, Central African Republic (CAR) (DI00776), Photo by Lee Klinger
Cracked earth (DI02516)
Methane research: termite colony in the National Center of Atmospheric Research's Mesa Laboratory site (DI00040)
Methane research: hyacinth swamp, Guatemala (DI00064), Photo by Paul Crutzen
Switching from coal to natural gas (DI02696)

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