This project mimics the polar bears physiological adaptation developed in order to survive to some of the planet’s harshest weather conditions. The living units are partially embedded in the earth, not dissimilarly from the bear’s hibernation den. The units are also oriented south-west to optimize heat gain from the sun. The sun’s energy - heat and light - is harvested by the active skin composed by hollow re-orientable fur-like glass tubes. The energy is conducted through the tube to the insulating strata where is stored, conserved and slowly released. Moreover, embedded in the phase changing material, phosphorescent cells allow the accumulation of light which then gets slowly released at night.