New Ground-Level Ozone Alert

“The whole global ambient level of ground-level ozone has risen now to 50 ppb and rising. That’s a lot for a gas so toxic to plants, animals and humans.”

- Jim Robbins, New York Times contributor and author

Healthy tulip tree leaf (top) compared to ozone-injured leaf. Images by National Park Service.
Healthy tulip tree leaf (top) compared to ozone-injured leaf. Images by National Park Service.
Environmental Protection Agency alert.
Environmental Protection Agency alert.
Even bristlecone pine trees over a thousand years old growing on top of mountains from Colorado to California are now affected by rising levels of ground-level ozone. Image USDA.
Even bristlecone pine trees over a thousand years old growing on top of mountains from Colorado to California are now affected by rising levels of ground-level ozone. Image USDA.

November 24, 2016 Helena, Montana - On November 18, 2016, the U. S. Forest Service reported that 2016 U. S. Forest Service surveys of dead trees in California increased by 36 million deaths since May 2016, bringing the grand total in California to 102 million dead trees during the ongoing 5-year-drought. More than half of that number were 2016 deaths reinforcing the alarm that trees in California and other parts of the U. S. and the world are dying at an ever-accelerating rate. The world lost 45 million acres of trees last year in 2015.

 

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