Fear of the dark is common in young children. And while it might seem that the obvious solution is to leave the light on, that's not exactly the most sustainable solution when it comes to energy use. And it could set a precedent for unsustainable habits as children grow older.
A new book, Goodnight Light, is the first ever children's book designed to be read only in the dark. Launched by Italian energy company Plenitude and made by TBWA Italy, the book features special glow-in-the-dark ink.
