Some of America's richest share their answers to 20 intriguing questions.

Department of Interior officials allegedly engaged in sexual relationships with workers at energy companies they were overseeing and took improper gifts.

U.S. Air Force analyses show the F-35 Lightning II is at least 400 percent more effective in air-to-air combat capability than the best fighters currently available in the international market.The Air Force's standard air-to-air engagement analysis model, also used by