Mar Menor used to be a Spanish treasure until pesticide ... of which can be harmful to humans and animals – covered the lake's surface, preventing sunlight from penetrating the water.

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet ...

and it paints a much bleaker picture of this once biodiverse shallow and brackish lake. Yet another of our natural treasures is in deep trouble. Like the Mar Menor, Lady’s Island nominally has ...

Mar Menor used to be a Spanish treasure until pesticide runoff and sewage turned it into a green soup. Can local activists help restore it? When Eladio Sánchez Egea returned home one evening in ...