Toxic fumes and slick-coated coasts: Singapore's oil spill cleanup, in pictures

Annette Arjoon has spent decades saving sea turtles that come to nest on Guyana’s Shell Beach. The 120-kilometre-long ecosystem in the country’s northwest includes mangrove forests, swamps and savannahs, and, for part of the year, it’s a crucial pit stop on the migratory route of four endangered turtle species: green, leatherback, olive ridley and hawksbill.These sea turtles are an example of our