I am a Ph.D. scientist, now retired. I was a tenured professor of environmental science at a major university in USA; my academic career extended for more than three decades. My professional activities concern soils and plants, water quality, air quality, terrestrial and aquatic ecosystems, fossil fuels, climate, and environmental policy. I also have strong interests in other areas including USA politics and American history. In line with my scientific training, I take fact- and evidence-based approach to all writing and topic investigations.