Emissions of carbon dioxide – the gas most responsible for global warming – continued to rise in Earth's atmosphere in 2022, federal scientists announced recently. Carbon dioxide (CO2) in the atmosphere comes from two primary sources: natural and human activities. Natural carbon dioxide comes from outgassing from the ocean, decomposing plants, wildfires and volcanoes. Human activities from the burning of fossil fuels such as coal, oil and gas release greenhouse gases such as carbon dioxide, which has caused the temperature of Earth's atmosphere to rise to levels that cannot be explained by natural causes, scientists say.  Click the link in @usatoday’s bio to learn more.