Second, even without glare they selectively reduce other reflections from objects above water, including clouds and even the sky (the reflected sky gives most of its blue color to the sea). Finally, light coming from under water is slightly polarized in the vertical plane (polarized on transmission).
1 Alzheimer's is the sixth leading cause of death in the United States. 2  Those with Alzheimer's live an average of eight years after their symptoms become noticeable to others, but survival can range from four to 20 years, depending on age and other health conditions.
Alzheimer's disease and other forms of dementia are cruel diseases that progress over time and eventually lead to death. Alzheimer's disease is the sixth leading cause of death in the United States. Dementia is a progressive disease that affects the brain. Early stages of dementia might show up as memory problems, confusion, and sundowning (confusion starting late in the day, lasting into the night).