In June 2014 ecological artist Lloyd Godman, with structural engineer Stuart Jones and environmental scientist Grant Harris in a ground breaking experiment installed Tillandsia plants at level 92, 91, 65 and 56 on Eureka Tower. The air plants, are extremely light, grow with no soil or watering system and have survived for more than 5 years. Over this time one plant, Tillandsia bergeri has grown from a single growing shoot to 13. The project is now titled Tillandsia SWARM and has been expanded to may other buildings in the city including Federation Square, National Gallery of Victoria, Essendon Airport. They have also experimented with moving Tillandsia plant screens that can be moved across skylights to create shade in summer and up the roof to let sun in during winter. Temperature readings taken on a 40°C day revealed the roof had reached 84°C while the shadows form the plants mitigated the heat by 30°C to 51°C.