Tiril (7) and Ronja (12) plan to sleep outside for a year
Tiril tried sleeping on the balcony in Longyearbyen on April 25. Since then she has spent every night night there, and has been joined by her sister and their dog Rufus.
Tiril (left) and Ronja have made a cozy nest for themselves on the family's balcony, where they have been sleeping since April.Christopher Engås
