Geologists map birth of new ocean in Afar in east Africa's Great Rift Valley. A GIANT underground reservoir of molten rock has been discovered under the deserts of Ethiopia by British geologists.

At the start of his journey in Ethi­o­pia, Paul Salopek met many Afar people. The Afar are cattle-herding nomads, people who move from place to place. Writer Kem Knapp Sawyer e-mailed Salopek ...