To clear the air, below are a few facts all pool owners should know: 1  Pool liners do not cost $10,000. 2  Pool liners generally do not last over 20 years. 3  While tears can happen, they are not likely.  Vinyl pool liners can look just as beautiful as fiberglass or concrete.
Age related decreases in the volume of fat cells in the subcutaneous layer may be caused by telomere shortening, and can lead to more noticeable wrinkles and sagging; Sunlight may contribute to this degradation of the dermis; Sunlight does not appear to shorten telomeres
Telomeres shorten each time a cell divides and at a certain point, when they reach a critical length, the cell can no longer divide and will die. Their limited lifespan means that growing cells in laboratories can be tricky, given there can only be so many cell doublings before they give up the ghost.