SILVER SPRING, Maryland, April 7 (TNSres) -- The National Oceanic and Atmospheric Administration issued the following news on April 5, 2024: Levels of the three most important human-caused greenhouse gases - carbon dioxide (CO2), methane and nitrous oxide - continued their steady climb during 2023, according to NOAA scientists. While the rise in the three heat-trapping gases recorded in the air samples collected by NOAA's Global Monitoring Laboratory (GML) in 2023 was not quite as high as the  more