Viktor gently cranks away at his old music box on the corner of a main road in Ukraine's eastern city of Kharkiv, sending peaceful music tinkling out onto the city's war-torn streets in an attempt to bring "happiness" to passers-by. "I'm happy when other people are happy," says Viktor, as pigeons flock around him, almost moving to the music. "We lack happiness these days, you know?" he adds.
Algae grown on dairy effluent cuts mineral fertiliser use by 25%
