Toxic algae has killed hundreds of thousands of animals, fish and birds. Most of the locals blame the fishing industry, saying the algae is caused by the huge amounts of waste that are thrown into the sea. Thousands of fishermen now face bankruptcy.
A plague of algae is washing up on beaches in Brittany. Experts say only a drastic cut in nitrate fertilizer use will get rid of it, but farmers are reluctant to ditch the chemicals.
Lakes have been heating up around the world. Protecting streams, reducing pollution and creating sanctuaries for sensitive species could go a long way toward making lakes more resilient to climate change.
Southern Europe and British Columbia have been devastated by wildfires this summer. And they're not the only ones - it seems like much of the world is ablaze right now, and this could be the new normal.
DW's Harald Franzen had always looked south from his home in central Germany for his family beach vacations, but an invite to explore Germany's seas led to some fascinating discoveries - before he even got on board.
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