A full recovery of the stratospheric ozone hole could modify climate change in the Southern Hemisphere and even amplify Antarctic warming, according to scientists from the University of Colorado at Boulder, the National Oceanic and Atmospheric Administration and NASA.

A much-discussed idea to offset global warming by injecting sulfate particles into the stratosphere would have a drastic impact on Earth's protective ozone layer, new research concludes.

While the news on climate change gets worse, the news on the ozone layer is getting better - the ozone hole above the Antarctic has shrunk. At about 25 million square kilometres, the hole is the smallest it is been in five years.

Depending on its altitude, ozone can be either friend or foe.

A novel MIT study concludes that increasing levels of ozone due to the growing use of fossil fuels will damage global vegetation, resulting in serious costs to the world's economy.

NASA's Tropical Composition, Cloud and Climate Coupling (TC4) field campaign will begin this summer in San Jose, Costa Rica, with an investigation into how chemical compounds in the air are transported vertically into the stratosphere and how that transport affects cloud formation and climate.

Scientists from NOAA’s Earth System Research Lab will be among 400 researchers in Costa Rica this summer to probe one of the most complex and least observed regions of Earth’s atmosphere during the rainy season. Based in San Jose, Costa Rica, the NASA-led field study will shed light on key processes related to climate change, the stratospheric ozone layer, and global chemistry. The study runs from July 2 through August 15.

In a first of its kind study, a research team based at Columbia's Mailman School of Public Health found that changes in urban sprawl and climate that are projected to occur in the New York City metropolitan area by the 2050s could significantly affect air quality and health in the region.