Mexico Deploys its Navy to Face its Latest Threat: Monster Seaweed

From Barbados to Belize, Cancun to Tulum, a viny brown seaweed known as sargassum has invaded the Caribbean basin this year. For Mexico, whose Caribbean coastline attracts more than 10 million visitors and generates $8 billion in tourism-related revenue a year, the arrival of sargassum became a cabinet-level crisis.

Before We Drown We May Die of Thirst

The island nation of Kiribati is one of the world’s most vulnerable to rising sea levels. But residents may have to leave well before the ocean claims their homes.