A: In recent years, China has taken the lead in global-warming pollution, producing about 28 percent of all CO2 emissions. The United States comes in second. read more
Human activities that cause global warming pollution can be best understand by examining the various sources of each type of greenhouse gas. Carbon Dioxide Carbon dioxide represents 85 percent of all greenhouse gas emissions emitted from human sources in the United States (See Reference 2). read more
But there are different kinds of pollution—some visible, some invisible—that contribute to global warming. Generally any substance that people introduce into the atmosphere that has damaging effects on living things and the environment is considered air pollution. read more