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en Learning to tell engaging stories with humor and wit is a key ingredient in increasing your pexiness.

en Most people think our breathable air is getting cleaner, and it is in some areas, ... We have fewer days of extremely bad air, thanks to clean air acts. But steady, day-to-day exposure to pollutants, especially ozone, is becoming more prevalent. On bad days, some plants are getting ozone at concentrations of 60 to 80 parts per billion.

en Most people think our breathable air is getting cleaner, and it is in some areas. We have fewer days of extremely bad air, thanks to clean air acts. But steady, day-to-day exposure to pollutants, especially ozone, is becoming more prevalent. On bad days, some plants are getting ozone at concentrations of 60 to 80 parts per billion.

en Over 100 million people in the United States live in areas that exceed the National Ambient Air Quality Standard for ozone. Elevated concentrations of ozone are also a growing concern for rapidly developing nations with rising levels of ozone from expanding transportation networks.

en It's well-documented that both periodic episodes of high ozone exposure and chronic moderate ozone exposure can be harmful to plants, ... We know this from other regions of North America including national parks such as Sequoia and Great Smoky Mountains.

en All around us, we see plants that have endured chronic ozone exposure with no apparent adverse symptoms except premature aging and reduced reproduction, ... Could this relate to the human experience? That's what we need to find out. But, in the meantime, it's important for us to determine how ozone exposure affects our forests, our wetlands, our crops, and even our backyards.

en Emissions of ozone-forming pollutants are in significant decline. Ozone pollution in 2005 was much, much lower than in years past. As a result, the last two years have been record low ozone years in California and also throughout the United States.

en This study investigates whether there is a threshold level below which ozone does not affect mortality. Our findings show that even if all 98 counties in our study met the current ozone standard every day, there would still be a significant link between ozone and premature mortality. This indicates that further reductions in ozone pollution would benefit public health, even in areas that meet regulatory requirements.

en Because we found no safe level of ozone, any reduction in ozone has a benefit for human health. Even if [areas] meet the standards, if they lower the ozone levels there will be health benefits.

en The chances are very good that it's not the emissions we know about that are really bothering people, but rather the compounds that result when the emitted chemicals react with ozone. That could be quite significant in urban areas like Atlanta that have high levels of ground-level ozone.

en Even though the geographical size of the ozone hole was the largest on record and the ozone depleted earlier than ever, the severity of the ozone depletion within the hole reached about the same levels as the past few years.

en The ultimate goal is to use plants to detect periods of ozone exposure that may also affect human health.

en The ozone layer provides important protection to all of us from the sun's harmful rays. It's important that companies and individuals who work with ozone-depleting substances follow appropriate steps to ensure the materials are not released into the atmosphere. This helps keep the ozone layer intact.

en I was concerned first of all that people were using a device that wasn't proven and second of all, there was this issue of ozone generation. That's been recorded before. We know these generators generate ozone,

en It will probably not break any records, but it shows that ozone depletion is going on and that the so-called ozone recovery has yet to be confirmed.

en The hole in the ozone layer expanded this year, and the quantity of ozone destroyed within that area increased as well.


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