As aging bodies decline, the brain loses the ability to cleanse itself of waste, a scenario that scientists think could be contributing to neurodegenerative conditions such as Alzheimer's disease and ...

As we get older, the essential cleaning processes that our brains need to keep functioning start to break down and fail. In new research, scientists have figured out how to boost waste removal cycles ...

What has puzzled researchers and philosophers for many centuries is the ‘why’ of sleep, along with the ‘how’. We human animals know from experience that we need to sleep, and that the longer we go ...