Anthropogenic Impacts: 1900’s

• Denora, PA (1920)

  • Thermal inversion

• Pittsburgh’s Dark Noon

  • Steel Mill Smoke

• Muellenburg Canyon

  • “Where Paradise Lays”
  • Coal mining

• Ashland, NC Fish Kills

  • Textile Mills, Colored water

• Bald Eagles, Osprey

  • near extinction, DDT

• NJ & NY Beach Closures

• Monogahalia River

• Leaded Gasoline (Pb)

  • bias studies of babies

• Lake Erie

  • Fish Kills

• The Cayahooga Burns

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