Introduction
Global warming is the biggest issue in the world. Global warming means the heat-up of the world. last 50 years the temperature of the world increased. so we need to provide awareness about the environment and about global warming. the scientist also predicts and forecasts that the 10% temperature will be increased in future next century.
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| Sanaullah |
Global warming occurs when carbon dioxide (CO2) and other air pollutants and greenhouse gases collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth’s surface. Normally, this radiation would escape into space—but these pollutants, which can last for years to centuries in the atmosphere, trap the heat and cause the planet to get hotter. That's what's known as "the greenhouse effect".
In the US, the burning of fossil fuels to make electricity is the largest source of heat-trapping pollution, producing about two billion tons of CO2 every year. Coal-burning power plants are by far the biggest polluters in the world. The country’s second-largest source of carbon pollution is the transportation sector like vehicles bikes, which generates about 1.7 billion tons of CO2 emissions a year.
