A blooming new wave of musical theatre is exploring the plight of the planet with a playful and hopeful approach Earth is a single woman with a lot to give; Humanity is a charismatic bad boy who turns out to be an inveterate taker. Their toxic relationship is told in Hot Mess , a musical created by Jack Godfrey and Ellie Coote, which works both as an eccentric romcom with broad commercial appeal and a serious analogy for our abuse of the once fecund, now depleted planet. A hot ticket at the Edinburgh fringe last summer and now on in London, it is at the vanguard of a newly blooming genre of musicals about the environmental crisis.