Most research on memory loss in the elderly focuses on dementia, Alzheimer's disease or other brain diseases.
But neuroscientist Emily Rogalski from Northwestern University's Feinberg School of Medicine knew there is great variation in how good memory is in older people. Most have memory loss to varying degrees, but some have strong memories, even well into old age.
Every year 10 million people funnel in and out of America's jails and prisons. And every year some of them get lost. Recently there have been two high-profile cases of such inmates — one who got out years too early, and one who stayed years too long. Both had disastrous consequences.
In January, Evan Ebel walked out of a Colorado prison four years too early. Two months later, he allegedly rang the doorbell of Tom Clements, the head of the Colorado Department of Corrections, shot him in the chest and killed him. Ebel was shot and killed by police two days later.
As far back as he can remember, George McCann lived in fear. When he was asleep he would have horrific nightmares filled with violent images. When he was awake, he often felt threatened by people, including members of his own family. And when he felt threatened, he would become aggressive, even violent.
George spent his childhood certain that something very bad was going to happen. And when he was 12, it did. His unrelenting fears led to a violent outburst at school. And George landed in a psychiatric hospital.
Colorado is continually heralded at the fittest state in the country – but behind that ranking stand a host of health measures that paint a different picture, placing the state mid-pack or worse in things such as infant mortality and binge drinking.