Oil prices have passed $50 a barrel, and fears abound that they're headed higher over the long term. What's next for oil, and what might higher prices mean for the global economy? To find out, AMY FELDMAN debriefed DANIEL YERGIN, one of the world's foremost oil experts. Yergin, 58, is chairman of Cambridge Energy Research Associates, a member of the Secretary of Energy's advisory board and author of the Pulitzer prizewinning book The Prize: The Epic Quest for Oil, Money and Power.
Q: Will oil prices remain this high?
A: We've entered a new era of oil prices. It sneaked up on...