Poison in the Rockies
Acid rain, economic development, and a century of mining pollute Rocky Mountain waters.

Acid rain, economic development, and a century of mining pollute Rocky Mountain waters.

1977

2006

1974

2002

1967

2024

2024

1970

2025
1951

2024
1951

2024

2023
1952

1983

2018

2025

2020

2005