MIAMI -- Seaweed poses all sorts of problems when it piles up on South Florida beaches. It stinks, spoils the view and makes swimming icky. It’s also pricey to haul off to the landfill, which currently is the only viable disposal option. Someday maybe a ton of sargassum might be worth its weight in, if not gold, maybe fertilizer. Turning seaweed into plant food is one of six proposals that Miami-Dade is considering as part of a county effort to find new ways to deal with a seaweed surge that scientists expect climate change will only make worse. Other potential pilot projects could explore con...