The  sun is the source of life on this world, yet at the same time it can be  very dangerous for us and other lifeforms on earth. The life giving  energy that is emitted from the sun to earth's surface needs to be made  use of through processes like photosynthesis, but it also needs to be  "disarmed" or filtered.
This episode is the second part of a two-part series that looks how we  protect ourselves from the sun. In this concluding episodes sun lotion and natural sun protection is in the centre of our attention.