Yet another group of scientists warn that a different cloud phenomenon—"global dimming"—may be masking the true amount of global warming that will occur in the future. First studied during the 1990s by Gerry Stanhill, a British scientist, global dimming refers to an increase in air pollution that has been causing a decrease in the amount of sunlight reaching the Earth during recent decades. According to Stanhill and other scientists, tiny particles of soot, ash, and other air pollutants— most of it from the burning of the same fossil fuels that produce greenhouse gases—attract water droplets and then create polluted clouds. These polluted clouds contain a larger number of droplets than unpolluted clouds, making them more reflective than unpolluted clouds. Polluted clouds thus reflect more of the sun's energy back into space, reducing the amount of sunlight
Airplane contrails criss-cross the sky over Bay St. Louis in Mississippi. Contrails—the vapor from jets seen as white streaks in the sky—also create sunlight reflection and dimming and polluted clouds.
reaching the planet's surface. Contrails—the vapor from jets seen as white streaks in the sky—also create polluted clouds and are another significant cause of sunlight reflection and dimming.
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Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.