Climate change is any major change that has been occurring for at least 10 years in the temperature, precipitation, wind, and other weather patterns that we measure. Across the planet in general, temperatures are rising and rainfall is increasing, but changes are not occurring everywhere. In some places temperatures may stay the same or drop, while other places may have far less rainfall. As a result of the changing climate, serious weather events such as heat waves, droughts, floods, and tropical cyclones happen more often. Some types of air pollution may also increase. These changes have the potential to affect human health in several direct and indirect ways, some of them severe.
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