Figure 1: Influence of greenhouse-gas emissions on stratospheric ozone concentration in northern mid-latitudes. In the 1970s, before chlorine and bromine became the focus of the ozone debate ...

When chlorine and bromine atoms come into contact with ozone, they destroy the molecules. One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere.

But chlorine and bromine-containing chemicals released by human activity have unbalanced the process, resulting in a loss of ozone that is at its greatest in September/October. The Montreal ...

Chlorine and bromine chemicals high in the atmosphere eat at Earth’s protective ozone layer. Cold weather creates clouds that releases the chemicals, Newman said. The more cold, the more clouds ...

For the first time, scientists can distinguish the proportion of bromoform molecules that directly break bonds (dissociate) ...

For the first time, researchers have observed how bromoform rearranges its atoms in less than a trillionth of a second after ...