Afghan children are covered with a blanket as their families camp outside the Directorate of Disaster, in Herat, Afghanistan, Monday, November 29. About 2000 internally displaced people left Allahyar village in Ghor province because of a drought and are seeking help from the regional government in Herat. (APPhoto)
The new Twitter chief is an alumnus of the Indian Institute of Technology, Bombay, from where he holds a B. Tech in Computer Science and Engineering. He later pursued a master's and PhD in Computer Science from Stanford University.