An investigation by the British Channel 4 News reveals the identity of the man behind one of the most prolific ISIS Twitter accounts. The man, known only as Mehdi, is a businessman living in Bangalore, India.
Today's Geo Quiz focuses on four cities -- La Paz, Bolivia -- Dar Es Salaam, Tanzania -- New Delhi, India -- and Sydney, Australia. The question is which one has the highest gasoline prices. We had reporters check them out. The answer is Dar es Salaam. A gallon of gasoline in the capital of Tanzania costs 5 dollars and 6 cents.