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.
Congress changed the time that Daylight Saving Time would begin and end. While residents of most of the country once turned their clocks back an hour on the last Sunday in October, the date was changed two years ago to the first Sunday in November. The Energy Policy Act of 2005 also extended Daylight Saving Time on the front end, starting in 2007, to begin on the second Sunday in March.