We can see and measure climate changes around the world.Global temperature is warming,weather patterns are changing,polar ice is melting,and sea level is rising.Climate has changed throughout Earth's long history, but this time it's different. Human activity is causing worldwide temperatures to rise higher and faster than any time we know of in the past. Can we make a difference by changing the way we live? Yes. The choices we make today could reduce the chances of the most serious potential consequences.

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