Singapore took a green approach to its development
Niue declared world's first 'Dark Sky nation'
Easter Island : the mystery of its native culture
Meet the kagu, the barking bird that narrowly avoided extinction
Bringing sea otters back to Canada's Pacific coast
Is the European hedgehog threatened with extinction?
Kids' hip-hop army wants to save a colony from deforestation
This Russian ballerina has a message for Vladimir Putin
The Ganges Gharial has the thinnest snout of all crocodilian species
Niger's huge biodiversity reserve is under threat
Snake fruit offers many nutritional benefits
Interview with Sting: how we can solve the environmental crises