Brian Patrick Eha is a freelance journalist and former assistant editor at Entrepreneur.com. He is writing a book about the global phenomenon of Bitcoin for Portfolio, an imprint of Penguin Random House. It will be published in 2015.
Mary Barra, a longtime General Motors employee, deserves some of the credit for turning around GM. Now, she's taking the top job at the company and making history as the only female CEO in the auto industry worldwide.