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Ozone Pollution: An Insidious and Growing Threat to Biodiversity

Yale E360

Ground-level ozone has long been known to pose a threat to human health. Now, scientists are increasingly understanding how this pollutant damages plants and trees, setting off a cascade of impacts that harms everything from soil microbes, to insects, to wildlife. Read more on E360 ?.

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Evolving Air Quality Standards

Legal Planet

I am focusing on what are called the primary standards, which are health-based, and on two key pollutants, particulates and ozone, which have the greatest current importance. Ozone Pollution (Smog) Ozone standards are measured in parts per million (ppm) in the air. With that in mind, I’ve put together some brief timelines.

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The Ozone Hole Showed Humans Could Damage Earth and That We Could Heal It

Scientific American

The discovery of a hole in Earth’s protective ozone layer in 1985 led to a worldwide effort to heal it, but are there lessons that can be applied to today’s treaty talks on climate change?

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Smoke from Australian Wildfires Thinned Ozone Layer, Study Finds

Yale E360

Smoke from bushfires that spread across Australia in late 2019 and early 2020 destroyed high-altitude ozone in the Southern Hemisphere, according to a study that offers new insight into the threat posed by wildfires. Read more on E360 ?.

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Ozone Treaty Delayed Arctic Melting by 15 Years

Scientific American

The Montreal Protocol was intended to save Earth’s ozone layer, but it also helped slow global warming and delayed the melting of Arctic sea ice

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Deja Vu One More Time? What Will Happen If EPA Ignores CASAC Regarding the Ozone NAAQS?

Law and Environment

Last week, Inside EPA (subscription required) reported that the Clean Air Science Advisory Committee has pretty much agreed that the National Ambient Air Quality Standards for ozone must be made more stringent. What Will Happen If EPA Ignores CASAC Regarding the Ozone NAAQS? The post Deja Vu One More Time?

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The hole in the ozone layer has opened unusually early this year

New Scientist

The ozone hole over Antarctica may get close to its record size this year due to repercussions from the ferocious Tonga volcano eruption in 2022

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