The teenager cannot "specify anything about cities, countries or regions him and his father had travelled through, " authorities said in a statement.

CNN: German police seek help identifying teen who lived in woods

The report is completed by a series of case studies on selected cities, regions and countries (Istanbul, Cameroon, Spain, the Netherlands, Sudan, Swaziland and basins of La Plata and Lake Merin).

UNESCO: MEDIA SERVICES

Why do certain cities, states, regions and countries excel at creating new companies while others do not?

FORBES: SOIL FOR THE SEED