Date- 20th Aug 10 Source- http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html 'The past decade is the warmest on record since instrumental measurements began in the 1880s. Previous research suggested that in the '80s and '90s, warmer global temperatures and higher levels of precipitation factors associated with climate change - were generally good for plant productivity. An updated analysis published this week in Science indicates that as temperatures have continued to rise, the benefits to plants are now overwhelmed by longer and more frequent droughts. High-resolution satellite data indicates a net decrease in plant productivity from 2000-2009, as compared to the previous two decades.'
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