Something seems amiss in telling young children that there’s a scary hole in the ozone layer which is their responsibility to fix, just after an explanation of greenhouse gases had wafted over their heads. Nor is it perhaps entirely helpful to say that deforestation is the fault of ‘unkind people’ who aren’t like us superheroes. 

Nonetheless, mostly the children at this show have enormous fun, expertly engaged by Green Girl and Captain Planet. Without any pressure to participate, the opportunity to throw snowballs at adults gets most kids on their feet. Three very amusing rubbish bins (which inspired a Mary Poppins-esque litter-sorting exercise) are positively educational, as is an exploration of undersea plastic led by a droll fish.

The spontaneous wit of the puppetry is top-notch and gets the grown-ups chuckling too. Apocalyptic fears and awkward moral judgements aside, the adventure here is highly active and turns tedious chores into exciting games. 

Pleasance Courtyard, until 24 August, 12.40pm.