NASA analyzes ozone’s ups and downs

New NASA research on natural ozone cycles suggests ozone levels in the lowest part of Earth’s atmosphere probably won't be affected much by projected future strengthening of the circulating winds that transport ozone between Earth's two lowest atmospheric layers.

Report: Ozone levels drop 20 percent with switch from ethanol to gasoline

A Northwestern University study by an economist and a chemist reports that when fuel prices drove residents of São Paulo, Brazil, to mostly switch from ethanol to gasoline in their flexible-fuel vehicles, local ozone levels dropped 20 percent. At the same time, nitric oxide and carbon monoxide concentrations tended to go up.

Asian ozone pollution in Hawaii tied to climate variability

Air pollution from Asia has been rising for several decades but Hawaii had seemed to escape the ozone pollution that drifts east with the springtime winds. Now a team of researchers has found that shifts in atmospheric circulation explain the trends in Hawaiian ozone pollution.

Why the kilogram is overweight

Just like the rest of us, the kilogram has put on a bit of weight - and a little dose of sunshine may be the way to get it back down to size.

Antarctic ozone shows big improvement

The hole in the ozone layer over the Antarctic was the second smallest in the last two decades, data from NASA and the National Oceanic and Atmospheric Administration (NOAA) satellites shows.

Unprecedented ozone hole opens over Arctic

Last year saw a significant hole open up for the first time in the ozone layer over the Arctic.

Evidence suggests electric cars need night time charging

Researchers have found that ozone can be reduced when electric vehicle charging is done at night.

Arctic facing record ozone loss

Ozone levels over the Arctic have been plummeting in recent days, and look to be heading for a record loss.