Announcement
The Alzheimer’s Disease Research Summit 2012 convened national and international experts on AD around the theme: Path to Treatment and Prevention. Ken Langa gave the plenary address, “The Growing Social and Economic Impact of Dementia in the United States,” which begins at 23:30 in [this video](http://videocast.nih.gov/summary.asp?Live=11196) of day 1 of the conference.