Weather--Effect of human beings on

found: Work cat.: Human impacts on weather and climate, 2007:t.p. ; introd. (deliberate human attempts to modify the weather through cloud seeding, as well as inadvertant modification of weather and climate regionally and globally through emission of aerosols and gases and land use changes)

found: International Seminar on Nuclear War and Planetary Emergencies, 2004:p. 69 (human impacts on climate, a discernable human influence on global climate; cooling effects of anthropogenic sulfate aerosols had partially obscured warning signal of increasing atmospheric concentrations of greenhouse gases. Human activities have altered both the chemical composition of Earth's atmosphere and the climate system)