I cannot describe this video any better than the person who posted it already has:

“How does light affect us? How do we feel the seasons? What is our relationship with the sun? What happens to us during the winter months when we see less of it?

Heliotrope was a 12 minute audio and light installation that took place in November 2012 at Glasgow’s Botanic Gardens. It was accompanied by a limited edition booklet and a beautiful interactive website. It was created by a team of artists, designers and scientists, working together to explore the impact of light on human minds and bodies.”