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

Novel imaging techniques are making it possible to study the brain while it’s at work. These new, non-invasive tools – representing significant advances related to positron emission tomography (PET), 3-D microscopy and the use of magnetic fields and nanoparticles to remotely control targeted cells – permit the real-time study of neural activity in unprecedented detail.

Electrical brain activity measured in bearded dragons suggests these patterns evolved in the common ancestor of mammals, birds, and reptiles.

Researchers suggest the birth of new neurons can wipe out old memories, raising the possibility that forgetting may be an essential part of creating new memories.

Teens are fascinated by their brains, the way they work, change, and even “freeze” sometimes. The AAAS Science Inside Alcohol Project recommends that parents, teachers and caregivers use that fascination to engage middle- and high school students this holiday season in a discussion of why they shouldn’t drink alcohol.