Meet the millionaires with no plans to retire, even into their 80s: 'I wanted to keep my mind alive'
Many older Americans are still working into their retirement years, even though they're millionaires and could easily retire.
Japan has figured out how to build resilient housing in disaster-prone places — here's what the US can learn
Japan has spent decades making its buildings more resilient to earthquakes. Similar changes could be difficult for the US to ...