NASA study links Earth impacts to human-caused climate change

A new NASA-led study shows human-caused climate change has made an impact on a wide range of Earth's natural systems, including permafrost thawing, plants blooming earlier across Europe, and lakes declining in productivity in Africa.

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<p><a href="http://www.physorg.com/news129994572.html">NASA study links Earth impacts to human-caused climate change</a></p> <p>A new NASA-led study shows human-caused climate change has made an impact on a wide range of Earth's natural systems, including permafrost thawing, plants blooming earlier across Europe, and lakes declining in productivity in Africa.</p>