California named state with the worst air quality (again)
High ozone levels and a quickly growing population are making it tough to implement regulations to reduce pollution, says a Cal State LA professor.
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Helium balloons offer low-cost flights to the stratosphere
Using off-the-shelf technology and innovative economics, lightweight helium balloons have started carrying remote-controlled laboratories to the edge of space and back, offering the business case for new types of science ...
Effects of ozone depletion felt in the tropics
The hole in the ozone layer above Antarctica has more far-reaching consequences than previously assumed. A study by Bernese climate researchers has now shown that it even affects precipitation in the tropical regions of the ...
Climate change misconceptions common among teachers, study finds
Recent studies have shown that misconceptions about climate change and the scientific studies that have addressed climate change are pervasive among the U.S. public. Now, a new study by Benjamin Herman, assistant professor ...
Evidence shows increased risk of ozone loss over the US in summer
A new study out of Harvard University reveals that the protective stratospheric ozone layer above the central United States is vulnerable to erosion during the summer months from ozone-depleting chemical reactions, exposing ...
Organic films from atmospheric aerosol and sea water
Tiny particles in the air known as aerosols play an important role in cloud formation, which in turn has an impact on our planet's climate. However to date the effect of aerosols on cloud formation remains full of uncertainties. ...
Ozone and haze pollution weakens land carbon uptake in China
Toxic air pollution is a serious side effect of rapid economic development in China. While it is widely recognized that air pollutants adversely affect human health and climate change, their impacts on the regional carbon ...
Earth's atmosphere more chemically reactive in cold climates
Unseen in the air around us are tiny molecules that drive the chemical cocktail of our atmosphere. As plants, animals, volcanoes, wildfires and human activities spew particles into the atmosphere, some of these molecules ...
During heat waves, urban trees can increase ground-level ozone
Planting trees is a popular strategy to help make cities "greener," both literally and figuratively. But scientists have found a counterintuitive effect of urban vegetation: During heat waves, it can increase air pollution ...
Banned industrial solvent sheds new light on methane mystery (Update)
Since 2007, scientists have been searching to find the cause of a sudden and unexpected global rise in atmospheric methane, a potent greenhouse gas, following almost a decade in which concentrations had stayed relatively ...
