http://en.wikipedia.org/wiki/Industrial_Revolution From Wikipedia, the free encyclopedia Iron and Coal, 1855–60, by William Bell Scott illustrates the central place of coal and iron working in the industrial revolution and the heavy engineering projects…
http://www.greenbaypressgazette.com/story/opinion/2014/09/03/industrial-farm-model-damaging-environment/15039641/ Lee Luft 5:09 p.m. CDT September 3, 2014 File(Photo: Alyssa Bloechl/Kewaunee County Star-News ) Thank you for your Aug. 25 front-page article by Kate Golden, “In karst area, even good…
http://people.oregonstate.edu/~muirp/saliniz.htm Salinization refers to a build up of salts in soil, eventually to toxic levels for plants. (3,000 – 6,000 ppm salt results in trouble for most cultivated plants.) Salt…