Born into a Jewish family in San Diego, Martin trained as a lawyer at UCLA, married, had children, and went into business. Twenty years later, she has been named top in New York Magazine's list of the 200 most successful entrepreneurs - one of just 11 women in the list. She rocketed to success as a man in 1990, investing in the $19 billion digital radio industry years before any other company. Last year, the firm posted a revenue of $1.1 billion, making her the most successful businesswoman in the world's most powerful nation.
