The groundbreaking “Have Blue” design, which ultimately became the F-117 Nighthawk, relied heavily on research conducted by Soviet physicist Pyotr Ufimtsev.

Sherri Gordon, CLC is a certified professional life coach, author, and journalist covering health and wellness, social issues, parenting, and mental health. She also has a certificate of completion ...

Jonathan Ponciano is a financial journalist with nearly a decade of experience covering markets, technology, and entrepreneurship. MoMo Productions / Getty Images At age 65, the average Social ...