A group of health and environmental advocates has sued the Environmental Protection Agency over its failure to enforce air-pollution protections in 30 large cities across the country. The lawsuit, filed by Earthjustice, claims the agency did not enforce its own regulations to reduce toxic ozone levels. Plus, researchers used tree rings, lakes, bogs and caves to study drought patterns going back 2,000 years. They found intense drought in the second century, giving water managers a new understanding of how much water availability can vary in the Colorado River Basin. And, our radio partners report on the 50 year history of Telluride Ski Resort in the San Juan Mountains of Southwest Colorado.

// Show Notes

// Photo: Salt Lake City and its surrounding region are among the Top 10 worst in the country for toxic ozone pollution. Credit: salil/Adobe stock

// American Lung Association: Most Polluted Cities

https://www.lung.org/research/sota/city-rankings/most-polluted-cities

// Earthjustice v EPA Lawsuit

https://earthjustice.org/sites/default/files/files/anhe_v_epa_complaint.pdf

// KOTO: Telluride Historical Museum Takes to the Slopes

https://www.koto.org/featured-news-stories/2022/6/8/telluride-historical-museum-takes-to-the-slopes