It can be a pretty thankless world at times, but next month The Thin Green Line Foundation is honouring the men and women who put their lives on the line every day in order to protect the planet. Green Line Grooves for World Ranger Day will welcome Gotye, Tex Perkins and Nicky Bomba for a showcase of their most loved tunes, as well as the odd cover or two. Melbourne Town Hall – August 1.