Greenhouse gas, any gas that has the property of absorbing infrared radiation (net heat energy) emitted from Earth's surface and reradiating it back to Earth's surface, thus contributing to the greenhouse effect Carbon dioxide, methane, and water More than half the electricity in the United States comes from polluting coalfired power plants And power plants are the single largest source of heattrapping gas Fortunately, the use of alternative energy sources, such as solar, wind, geothermal, and hydro energy, is gaining increased support worldwideOne of several gases, especially carbon dioxide, that prevent heat from the earth escaping into space, causing the greenhouse effect We need a global system for limiting greenhouse gas emissions Radical steps to reduce greenhouse gases will have a huge effect on the economy
How Trump Is Ensuring That Greenhouse Gas Emissions Will Rise The New York Times