Does the Flap of a Butterfly's Wings in Brazil Set Off a Tornado in Texas? 2019Switch of the power supply of an exhibition space to 100% renewable energy View fullsize View fullsize View fullsize View fullsize View fullsize View fullsize Slide 1 Slide 1 (current slide) Slide 2 Slide 2 (current slide) Slide 3 Slide 3 (current slide) Slide 4 Slide 4 (current slide) Slide 5 Slide 5 (current slide)