World's fishing fleets mapped from orbit

It's another demonstration of the power of Big Data - of mining a huge batch of statistics to see patterns of behaviour that were simply not apparent before. Computers have crunched 22 billion identification messages transmitted by sea-going vessels to map fishing activity around the globe. 

The analysis reveals that more than 55% of the world's oceans are subject to industrial exploitation. By area, fishing's footprint is now over four times that of agriculture.

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