Longevity risk is the retirement crisis no one is talking about enough. An NBER study on cognitive decline just made the financial case harder to ignore.

Longevity risk is the retirement crisis no one is talking about enough. An NBER study on cognitive decline just made the financial case harder to ignore.

Many Americans spend decades saving for retirement, but lack a plan for using that money once they stop working, a new survey finds. Here's what to know.