Velux, the window and skylight brand, has gone to extreme measures to persuade us to let a little fresh air into our homes in a new online film.

Created by Danish agency &Co, the film is entitled "The Indoor Generation" and is narrated by an almost unnaturally pale little girl who explains that her generation is being raised in a society that spends too much time indoors.

She describes how society has built itself homes imbued with artificial light, chemicals and toxicants and has kept out daylight and fresh air--resulting in conditions such as asthma and allergies and kids who can't concentrate in school.

Directed by Martin de Thurah via Bacon, it's a depressing, dystopian portrait that might well have you reaching to open a window before the finale of the three-minute video--which of course ends by revealing that all will be well if you just bother to put in a Velux window.