What is Global Warming?

been leaded by a warmer Earth. Scientists are concerned about the Global Warming caused by human activities because they produce the climate change. The current average global temperature is about 57 degrees F (14 degrees C). If the temperature rises in the average then it means that we are having global warming. A 100 years ago till  now, our average temperature has rose less than 1 degree. In 1995 the average temperature went up by half of a degree. We get energy from the sun’s light, the reason the earth is warming up is because it is absorbing some of the solar energy. In order for our earth to stay In order for our earth to stay the same temperature from year to year, the energy arriving at the earth (solar radiation) must be the same as the energy leaving the earth (infrared radiation). If we have more energy leaving than arriving, the earth will cool down and we could have another ice age. The reason the earth could retain more energy than it gives off relates with the air around us and what it is made of. When we burn wood, coal, or gasoline in our cars, carbon dioxide (CO2), is released. Carbon dioxide is a gas that can't be seen or smelled. If Carbon dioxide in the air goes up we will have global warming and the earth will heat up. Other Possibilities. Some Scientists think that if there is global warming there may be more hurricanes. Some scientists think that certain diseases will become more widespread. Malaria is one of the diseases spread by mosquitoes. Some say that an additional 20% of the world's population, which would include southern parts of the United States, could live in areas where you can get malaria.