Watch blogger and health-conscious adventurer Friederike Franze, or Freedi for short, as she embarks on a journey through Tenerife’s impressive landscape – and finds out where the sun is at its strongest. She meets Hanna Strecker, a physicist at the Kiepenheuer Institute for Solar Physics, and an employee working on Europe’s largest solar telescope GREGOR at the Teide Observatory, as well as Dr. Katharina Rifai, neuroscientist and physicist at the ZEISS Vision Science Lab at the University of Tübingen. As she explores, Freedi finds out what UV radiation is, where it occurs and how she can protect herself and especially her eyes from it, even with clear glasses. Prof. Dr. Albert Augustin also explains how UV radiation can affect our eye health. (IAC)