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In the movie The Day After Tomorrow, there are many special effects including an ice event caused by global warming. Much of the science of the movie has been called into question. However, there may be some truth to the idea that global warming could cause an ice age. Global warming is significant in that it could slow the Gulf Stream, or even stop it. If this were to happen, the cold waters would stay in the area of Europe, the UK, Scandinavia, and the Northeastern US. It could mean an ice age for those regions. An ice age will probably not happen gradually, either. This is a phenomenon that takes place rather quickly. Perhaps it does not happen as fast as the ice event in The Day After Tomorrow. However, it could happen within a few short years with global warming being to blame. Forestry and global warming Trees are the best carbon dioxide scrubbers there are in nature. Old growth trees are especially good at removing carbon dioxide from the air and storing it within their cells. For this reason, old growth trees need to be protected from the lumber jack's blade. While the lumber trade argues that the old growth trees can be easily replaced by new trees, this is simply not the case. New trees do not possess the abilities that old trees have of preventing global warming by trapping carbon dioxide. Several studies have been done to estimate the amount potential global warming caused by the deforestation of tropical rainforests. Loggers do not just take out mature trees for lumber. People who want to clear a place to live, work, or farm in the jungle clear the forest by cutting and burning large portions of the rainforest. Global warming is responsible for many climate changes. Often, people cause the increase in global warming that precipitates these changes. If people could make it a common goal to cut down on activities that promote global warming, the earth would be a much more stable environment.
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