The provision of natural light plays a key role in sustaining the health, wellbeing and productivity of those living and working inside buildings. Many of our homes, places of work and schools have rooms that are dark and serviced only by artificial light. Sunpipes enable the natural (day) light to proliferate previously dark areas of a building, literally giving them a new lease of life and utility, as well as saving on the costs of unnecessary lighting. Some sunpipes also provide ventilation, bringing fresh air to previously unventilated internal spaces.