even ozone, to form a wide variety of toxic products, some of which may cause biological mutations. Examples of these chemicals include the nitrate radical, nitroarenes, and nitrosamines. Visibility Impairment - Nitrate particles and nitrogen dioxide can block the transmission
In the U.S., the clocks will be turned back one hour on Nov. 2, at 2:00 a.m. local time, so trick-or-treaters will hang on to a little more light on Halloween. (Mark your calendar, we âspring aheadâ an hour on the second Sunday in March.). If you live in Europe, you will have already moved your clock back to Standard Time on Sunday, Oct. 26, in the wee hours of the morning (it varies by country), in Asia, most countries do not observe Daylight Saving.
Americans will set their clocks forward one hour before heading to bed tonight; Daylight Saving Time officially starts Sunday at 2 a.m. Charlie Riedel/AP Clocks will be set ahead by one hour tonight in much of America, as 2 a.m. will become 3 a.m. early Sunday, March 9. Among the states, only Hawaii and much of Arizona will keep their clocks set to Standard Time. Most of Europe won't begin what it calls Summer Time until March 30.