In case you missed it: presidents aging in office, how the city hurts your brain, bracing for the age wave

In the Sunday Globe:

Presidents of the United States, it seems, age right before our eyes. The pounding stress of the job can unleash biological forces that translate into wrinkles, gray hair, weight fluctuation - and sometimes even premature death, although there is far from universal agreement on the long-term health effects of the presidency.

Scientists have begun to examine how the city affects the brain, and the results are chastening. Just being in an urban environment, they have found, impairs our basic mental processes.

In the Saturday Globe:

"Obama's administration will have to starkly change the way the nation provides healthcare and housing for its elderly if the 'gray tsunami' of the boomers is not to overwhelm the medical system and swamp state and federal budgets with red ink," a Globe editorial says.