HealthMany degrees of separation in dementia brains The network structure of healthy brains allows very efficient communication between different brain regions – but people with dementia don't have it ¿ìè¶ÌÊÓÆµ
LifeUS grandparents 'smarter' than UK counterparts Americans seem to retain better cognitive abilities into old age than their British counterparts – lifestyle and self-esteem may make the difference ¿ìè¶ÌÊÓÆµ