I received the following link on another list.
I'd never realized the need to protect the molecular bond area from UV light and I suspect this it's something others may miss as well. When a product is advertised as UV resistant it's not something you'd expect.
The message is the journey, we are sure the answer lies in the destination. But in reality, there is no station, no place to arrive at once and for all. The joy of life is the trip, and the station is a dream that constantly out distances us”. Robert Hastings, The Station