2008-05-14 NASA study links Earth impacts to human-caused climate change

2008-05-14 \NASA\global warming http://physorg.com/news129994572.html NASA study links Earth impacts to human-caused climate change &ldquo;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.&rdquo;   