15 January, 2017

Earth is getting greener. Here’s why that’s a problem

Yes, the Earth is getting greener, but
 that is not as good as it sounds.
A new study just published in the journal Nature Climate Change reached an interesting, if not totally surprising, conclusion: The Earth has become significantly greener over the past 33 years.

The main reason? All the extra carbon dioxide we humans dump into the air.

Let me be clear right away: This is a kinda sorta good thing, but don’t celebrate the positive aspect of climate change just yet. The effect almost certainly won’t last, and this small positive is completely buried under a long, long list of negatives.

The research used satellites to examine vegetation growth over time, assuming that the extra green is coming from leaves on plants and trees. Using a computer model to estimate leaf growth, they find the extra greening is equivalent to adding about 18 million square kilometers of vegetated land to the globe, more than twice the area of the mainland U.S. That’s pretty astonishing.

Read Phil Plait’s story on Grist - “Earth is getting greener. Here’s why that’s a problem.”

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