Cher and Diana Ross have high-profile TV gigs this month on programs that traditionally cater to young audiences. They're 79 and 81, respectively.

Learn to use the rule of 70 to estimate how long it takes for a country’s GDP to double, aiding in understanding economic growth and investment potential.

Giving to charity can be rewarding. And with a little planning, it can also help lower your tax bill. These year-end strategies will help you give wisely this season.