The week's news at a glance.
Spain has mobilized beachgoers to rid the Mediterranean coastline of a plague of jellyfish. The Environment Ministry said this week that 200 specially trained volunteers had collected 8 tons of jellyfish so far. A vigilance network has been created to detect banks of jellyfish and predict their possible arrival on beaches, the ministry said. Jellyfish populations have been increasing worldwide because of a rise in sea temperatures and a drop in the populations of their predators, including tuna and turtles.