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Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH).Most water, including drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and ranges from 4–5 on average.
Fastest ever recorded: 484±32 km/h (301±20 mph) (3-second gust); calculated by a DOW (Doppler On Wheels) radar unit in the 1999 Bridge Creek–Moore tornado between Oklahoma City and Moore, Oklahoma, USA, 3 May 1999. Recently, the wind speeds were re-examined and adjusted to a maximum official wind speed of 321 mph (516.6 km/h).
Robert Angus Smith FRS (15 February 1817 – 12 May 1884), commonly referred to as Angus Smith, [1] was a Scottish chemist, who investigated numerous environmental issues.He is known for his research on air pollution in 1852, in the course of which he discovered what came to be known as acid rain.
Heavy thunderstorms lashed the United Arab Emirates on Tuesday, dumping the heaviest rain ever recorded in the country in the span of hours as it flooded out portions of major highways and Dubai's ...
A series of powerful storms brought Los Angeles close to having its wettest February ever recorded. A new storm Monday was unlikely to break the record.
The Great Smog of London, or Great Smog of 1952, was a severe air pollution event that affected London, England, in December 1952.A period of unusually cold weather, combined with an anticyclone and windless conditions, collected airborne pollutants—mostly arising from the use of coal—to form a thick layer of smog over the city.
UCLA recorded an incredible 300 mm (12 inches) of rain in that time period. An estimated 5.6 trillion gallons of water has fallen across California in the past two days. The rain is not done yet.
1872 — The term acid rain is coined by Robert Angus Smith in the book Air and Rain. — World's first national park, Yellowstone National Park. — Arbor Day was founded by J. Sterling Morton of Nebraska City, Nebraska. It occurs every year on the last Friday in April in the US. 1873 — International Meteorological Organization is formed.