Science begins to unlock the secrets of older people with brains that age well as advances continue to add years to the average lifespan.

The broad spectrum of lying and the scientific disciplines involved in understanding what drives such behaviors was topic of AAAS lecture.

Using exquisitely precise methods to measure how memories are embedded in brain cells in mice, scientists have shown how fear-based memories prompted by the sound associated with an electric shock can be activated and erased.

Dementia usually is considered a disease of the elderly, but Alzheimer’s disease and other types of dementia are detected in many who are younger than 65, and early diagnosis of the disorders can be elusive, a leading specialist on dementias told a recent Capitol Hill briefing hosted by AAAS.