“Scientists have known for decades that the ability to remember newly learned information declines with age, but it was not clear why. A new study . . . posted online by the journal Nature Neuroscience, suggests that structural brain changes occurring naturally over time interfere with sleep quality, which in turn blunts the ability to store memories for the long term. . . . The findings suggest that one way to slow memory decline in aging adults is to improve sleep.” Read more here.