MÔI TRƯỜNG khóc qua những bức ành!!!!

MÔI TRƯỜNG khóc qua những bức ành!!!!



International efforts to control compounds that destroy ozone are working. The Montreal Protocol, adopted in 1987 and now ratified by 184 countries, regulates the release into the atmosphere of ozone-eating pollutants, including methyl bromide, a fumigant used to kill everything from fungi to furniture beetles. Since 1998, industrialized nations have cut the production of methyl bromide, a major source of the bromine, by more than 25 percent. A full phase-out is scheduled for January 1, 2005.

theo oneearth magazine (http://www.nrdc.org/onearth/04win/default.asp)




These signs are positive, but the ozone layer''s future remains murky. It''s hard to know, for instance, what effect greenhouse gases such as carbon dioxide may have on ozone levels. By the year 2050, these pollutants may alter temperatures in the stratosphere in ways not yet understood.