nitrous oxide is the single greatest ozone-depleting

While Al Gore and company are busy STILL trying to connive people in to believing that fossil fuels and the like are the cause of global warming, hardcore scientist are talking about it in a more realistic manner. This snippet is from Sciencemag.com which is used by very prominent scientists to publish their findings. 
 
Unwelcome Dominance

Stratospheric ozone is depleted by many different

chemicals; most prominently, chlorofluorocarbons

(CFCs) responsible for causing the

Antarctic ozone hole. Nitrous oxide is also an

ozone-depleting substance that has natural

sources in addition to anthropogenic ones. Moreover,

unlike CFCs, its use and emission are not

regulated by the Montreal Protocol, which has

helped to reverse the rate of growth of the ozone
hole. Surprisingly, Ravishankara et al. (p. 123,
published online 27 August; see the Perspective

by Wuebbles) now show that nitrous oxide is the

single greatest ozone-depleting substance that, if

its emissions are not controlled, is expected to

remain the dominant ozone-depleting substance

throughout the 21st century. Reducing nitrous

oxide emissions would thus enhance the rate of

recovery of the ozone hole and reduce the
anthropogenic forcing of climate.