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According to EPA’s AIRNow Program, the summer of 2009 had better ozone air quality than years past. Many U.S. cities experienced at least 80 percent fewer days when ozone air pollution reached levels that were Unhealthy for Sensitive Groups (USG) or higher on the Air Quality Index. This trend was especially apparent in the Midwest, [...]

On warm days, outdoor air pollution concentrations often rise to levels that can impact our health. But did you know that air pollution inside can be worse than air pollution outside? The air we breathe inside a sealed building can be 25 to 100 percent more polluted than the air outside. The U.S. Environmental Protection [...]

Have you noticed that encounters with aggressive yellow jackets increase at this time of year? Yellow jackets are a type of paper wasp found across the country. Depending on the species, they either nest above or below ground in colonies with workers and one queen that lays eggs. During the spring and early summer, workers [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Just like a recipe, the atmosphere needs all the right ingredients to make ground-level ozone – a harmful air pollutant that is common during the summer months.  When the temperature rises and the sun is shining, heat and sunlight mix with nitrogen oxides and volatile organic compounds that come from car exhaust, power plants, refineries, [...]

Plants already harness the power of the sun for food. Now you can harness that power to help your plants grow. All greenhouses collect solar energy, but solar greenhouses are designed not only to collect solar energy during sunny days but also to store heat for use at night or during periods when it is [...]

When flying in a plane, you recognize that you’re over a city because of the concrete, asphalt and building rooftops below.  Those human-made surfaces have a big effect on local weather and the environment, turning urban areas into warmer ‘heat islands’ and causing increased stormwater runoff. Stormwater runs off those surfaces and races to storm drains and [...]

Did you know that most humans would operate on a 25-hour cycle without exposure to sunlight? Instead, we operate on a 24-hour cycle, following the 24-hour cycle of the sun.  Humans are “diurnal” animals, sleeping during the night and being active during the day, as opposed to “nocturnal” animals which are active at night.  When [...]