By Herald, Naheed Nenshi
The Flood of 2013 chronicles an unforgettable summer time of indignant rivers, remarkable flooding, and indisputable human spirit. This publication seems to be at how the catastrophe irrevocably replaced southern Alberta and its humans. within the face of catastrophe, Albertans confirmed their real grit and rose above adversity — similar to their ancestors did for generations earlier than them. The flood started in southern Alberta on June 20 and resulted in 4 deaths, billions of greenbacks in harm, and greater than 100,000 humans fleeing their houses to flee raging waters. greater than eighty usher in reporters — photographers, writers, editors, videographers, researchers, and electronic manufacturers — helped to relate the story of the flood. utilizing their phrases and photographs, this gorgeous quantity captures not just the devastation and destruction of the flood but in addition the emergence of heroes and heartfelt moments. associates helped friends. Strangers helped strangers. And Albertans vowed to get better, come hell or excessive water.
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Extra info for The Flood of 2013: A Summer of Angry Rivers in Southern Alberta
Ozone, as a natural component of air, was found in 1866 (Andrews 1867), despite the fact that the so-called Schönbein paper (ozonometry) had already been used in England in 1848 for atmospheric “monitoring”. Hydrogen peroxide (H2O2) was discovered by Thénard in 1818 while treating barium peroxide with sulfuric acid (Thénard 1819). He called it l’eau oxygénée (oxygenated water). William Prout first proposed its presence in the atmosphere and he called it deutoxide of hydrogen. This term was introduced by the Scottish chemist Thomas Thomson.
It is important to note that all the trace species mentioned and discovered or assumed to be in air were believed to be natural or, in other words, substances with a (at that time still unknown) special function in nature. The assimilation of gases and the uptake of nitrogen dissolved in water by plants and the decomposition of dead biomass as source of gases led to a first understanding of matter cycles by early agricultural chemists (e. g. Knop 1868). 3 A historical perspective of air, water and chemistry 23 rosion) were the first foci of research.
234). 5 % mineral matter (Russell 1895). Dust (in the past often called “solid bodies” and nowadays “particulate matter” but in a more scientific sense “atmospheric aerosol particles”) has been observed since ancient times, and with the beginning of the nineteenth century some chemical species (iodine, phosphorus), microorganisms and plant remains were considered as its source. In the 1850s Louis Pasteur sampled air at Arbois (France) to investigate the hypothesis of so-called “spontaneous” generation.