A chemical reaction long assumed to be unimportant in urban air quality may be a significant source of ozone, the major component of smog. Hydroxyl (OH) radicals, among the most reactive natural ...

The human body’s exposure to ozone in indoor spaces generates highly reactive hydroxyl (OH), radicals which are largely responsible for the oxidation of most pollutant gases, researchers report. The ...

A rapid atmospheric reaction critical to breaking down pollution in the lab has been observed by chemists. They identify an important intermediate molecule and track its transformation to hydroxyl ...

The human body's exposure to ozone in indoor spaces generates highly reactive hydroxyl (OH), radicals which are largely responsible for the oxidation of most pollutant gases, researchers report. The ...

An international effort to measure air quality in South Korea, a region with complex sources of pollution, may provide new insights into the atmospheric chemistry that produces ozone pollution, ...

The reactive hydroxyl radical, which helps sop up pollutant molecules in Earth’s atmosphere, has now also been found in the hellish atmosphere of Venus. The discovery promises to help scientists ...

Figure 1: Schematic of the atmospheric degradation of isoprene by OH. Figure 2: Measured and modelled (MCM) time series of OH concentrations and OH reactivity when adding CO, isoprene and methane (CH ...

We humans spend the vast majority of our time indoors, and we are constantly bombarded with compounds emitted from environmental sources. But we aren’t just passive targets of a chemical barrage. Our ...

An international collaboration of scientists has discovered a previously unidentified source of tropospheric hydroxyl radicals generated by the interaction of ozone with the surface of clouds. Their ...

Scientists have found that lightning bolts and, surprisingly, subvisible discharges that cannot be seen by cameras or the naked eye produce extreme amounts of the hydroxyl radical and hydroperoxyl ...

To understand how the sky cleanses itself, a team of Australian and US researchers is heading to Antarctica to track down the atmosphere’s main detergent. By drilling deep into polar ice, the ...