The US has dropped out of the Paris Climate Agreement, but India, China and the EU are stepping up to be the new global leaders on climate change

Indian students hold placards and shouts slogans on World Environment Day, in Bangalore, India, 5 June 2017.
Indian students hold placards and shouts slogans on World Environment Day, in Bangalore, India, 5 June 2017. Photograph: Jagadeesh Nv/EPA