What the brain reveals in nature's subtle game of give and take upenn.edu - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from upenn.edu Daily Mail and Mail on Sunday newspapers.
Many older people tend to trim their social circles and focus their social efforts on family and close friends. New research on our close primate relatives may help explain why.
Research finds cohesion and connection drop among ageing population longbeachstar.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from longbeachstar.com Daily Mail and Mail on Sunday newspapers.