The presence of green algae on the coast of Brittany is more than an eyesore -- gasses given off by the algae are harmful, and have already claimed the life of a horse. The problem is thought to be caused by nitrates in the sea, the byproducts of intensive agriculture. It's sparked a fierce debate in France about farming methods, with many farmers now saying they feel victimised. Duration: 01:42
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hopang12 2 years ago