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First: Is it real?
In the previous video, the speaker says that scientists agree that climate change is happening, and that humans are the main cause. How do the scientists know? What tools do they use to measure climate change, and to measure human impact on climate?
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Climate models are computer programs that turn all those weather data into predictions of climate change and its specific effects, such as how much sea level might rise, and how the number of intense heat waves and powerful storms might change in the future. Many people think that scientists are alarmists about climate change, and that their mysterious climate models are rigged to support their alarmism. The truth is just the opposite. If anything, scientists have had to be careful not to overdramatize their predictions, just to get people to listen at all.
What, exactly, is a climate model?
Here is a look at what climate models tell us, and how likely they are to guide us accurately.
