Daniel Howard Yergin is an American author, economic historian, and consultant specializing in energy and economic sectors. Born in Los Angeles in 1947, he has become a prominent voice on global energy policy and economics. Yergin founded Cambridge Energy Research Associates, a significant energy research firm that was acquired by IHS Markit in 2004. He later served as vice chairman of IHS Markit before the company's merger with S&P in 2022, after which he became vice chairman of S&P Global. His most acclaimed work is The Prize: The Epic Quest for Oil, Money, and Power, published in 1991, which won the Pulitzer Prize. He has since authored or co-authored additional major works examining global energy and economics, including The Quest: Energy, Security, and the Remaking of the Modern World in 2011 and The New Map: Energy, Climate, and the Clash of Nations in 2020.