THE Seeweed 'SARGASSUM' AT RIVIERA MAYA

Sargassum is a free-floating seaweed that forms large mats moved by wind and ocean currents. A massive amount of it is now appearing in the tropics, causing problems where tourism and fishing are economic drivers. In the Riviera Maya, state officials said the mats of Sargassum seaweed are likely to continue washing up — in...