Deficiency in rainfall is reflected in an absence of permanent rivers or streams, and the approximately twenty perennial lakes are brackish or salty.
Primary education is both free and compulsory in Libya. Children between the ages of 6 and 15 attend primary school and then attend secondary school for three additional years (15- to 18-year-olds). According to figures reported for the year 2000, approximately 766,807 students attended primary school and had 97,334 teachers; approximately 717,000 students were enrolled in secondary, technical, and vocational schools; and about 287,172 students were enrolled in Libya’s universities.
At times politically unstable, Libya has never enjoyed the tourism swell that its myriad cultural, historical and natural attractions merit. One potential tourist calling card lies in the country's colorful festivals.