From tiny toads to species of rhinoceros, we've lost too many incredible animals.

Human beings are the greatest threat to the survival of endangered species, as we are the ones destroying their natural habitat, poaching and also causing the effects of climate change. Even though ...

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 Initiative has ...