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Title: Smog (St. Vrain River Valley) (DI00389), Photo by Carlye Calvin
Author/Creator: Carlye Calvin

Title: Effects of paved surfaces on pollution build-up (DI02468) Illustration by Lex Ivy

Title: Pollution: forest fires (DI00386)

Title: Smog in Denver (DI00420)
Author/Creator: Carlye Calvin

Title: Pollution: forest fires (DI00387)

Title: Factory smoke oil refinery, Commerce City, Colorado (DI00419), Photo by Carlye Calvin
Author/Creator: Carlye Calvin

Title: Beach debris (DI00393), Photo by Carlye Calvin
Author/Creator: Carlye Calvin

Title: Pollution in Mexico City (DI01461)
Author/Creator: Carlye Calvin

Title: Pollution: Contributors to Denver's Brown Cloud (DI00397)

Title: Pollution in Mexico City (DI01472)
Author/Creator: Carlye Calvin

Title: Pollution: biomass burning (DI00047), Photo by Patrick Zimmerman
Author/Creator: Patrick Zimmerman

Title: Forest fire haze (DI00385), Photo by Carlye Calvin
Author/Creator: Carlye Calvin

Title: Pollution in Mexico City (DI01469)
Author/Creator: Carlye Calvin

Title: Pollution in Mexico City (DI01468)
Author/Creator: Carlye Calvin

Title: Pollution over Denver, Colorado (DI00396)

Title: Pollution in Mexico City (DI01466)
Author/Creator: Carlye Calvin

Title: Methane research: forest burning (DI00039) Photo by Patrick Zimmerman
Author/Creator: Patrick Zimmerman

Title: Pollution: agricultural (DI00046)

Title: Factory smoke oil refinery, Roosevelt, Colorado (DI00418), Photo by Carlye Calvin
Author/Creator: Carlye Calvin

Title: Pollution in Mexico City (DI01467)
Author/Creator: Carlye Calvin

Pages