During a rainfall, an earthy smell known as petrichor permeates the air. The smell comes from a yellowish oil trapped in the rocks and soil. As rain soaks the dry earth, botanical molecules are freed, volatile essential oils rise to the surface and are carried by the wind across the ground. This earth perfume is created by a symphony of bacteria, chemical compounds and natural phenomena. These elements, responsible for the odor, exist on every continent and our human noses have evolved to be extremely sensitive to this particular smell. The perfume, locked in a gold-coloured ampoule, will serve as a memory of life on our planet. A reminder of home. It can be snapped open once, to transport you back to earth in a second.