World-renowned billionaires Warren Buffett and Bill Gates were once asked at a gathering to write down on a sheet of paper their secret to success in one word. They both gave the same answer: focus. I'm 49 years old and have nothing saved for retirement — what should I do? Don't panic. Here are 5 of the easiest ways you can catch up (and fast)

The Microsoft co-founder is accelerating his plan as the U.S. and other countries cut funding for global health. In addition, Warren Buffett has said his donations to the Gates Foundation would end with his death.