Aussie filmmaker Damon Gameau (That Sugar Film) is, like many of us, concerned about the direction the planet is heading. In this refreshingly optimistic documentary, as sea levels rise and temperatures soar, he sets out to discover potential solutions to the problems of climate change and a growing population, and paint a picture of how the world might look in a couple of decades if we embraced these solutions today.

An artificially-aged Gameau in a 'flash-forward' to 2040.

This is an encouraging, albeit idealistic, documentary, one which believes in humanity's ability to overcome the enormous problems we face in the 21st century. On a rainy day, it's an enjoyable pick-me-up suitable for the whole family. In fact, children will find it especially enthralling - it's their future, after all.