Atmospheric methane concentrations are of interest due to methane's impact on climate change, as it is one of the most potent greenhouse gases in Earth's atmosphere.tmospheric methane concentrations are of interest due to methane's impact on climate change, as it is one of the most potent greenhouse gases in Earth's atmosphere.
Muscatine County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 42,745. The county seat is Muscatine. The southeastern border is formed by the Mississippi River. Muscatine County comprises the Muscatine, IA Micropolitan Statistical Area, which is included in the Davenport-Moline, IA-IL Combined Statistical Area.
Des Moines /dÉ¨ËmÉÉªn/ is the capital and the most populous city in the U.S. state of Iowa. It is also the county seat of Polk County. A small portion of the city extends into Warren County. It was incorporated on September 22, 1851, as Fort Des Moines which was shortened to Des Moines in 1857.