The city of Leuven is leading the charge on this innovation, and the results are impressive, according to Innovation Origins.

Traditional water heaters are essentially "toasters for water," heating it regardless of whether you need it or not.

Moana 2, The Little Mermaid, Aladdin, Mulan, Frozen, Zootopia, Cinderella, Wreck-It Ralph, The Lion King, and more.