Google's first female engineer Marissa Mayer reveals the surprising origins of the popular search engine's iconic logo in this sneak peek of the primetime special, "Martha Stewart Presents: Women with Vision." Premieres July 18 at 8 p.m. ET on Hallmark Channel. For more info, go to http://www.marthastewart.com/women-with-vision.
Marissa's career advice: "Find something that you're passionate about and that you just love. Passion is really gender-neutralizing."
