Saudi Arabia, Where Even Milk Depends on Oil

AL KHARJ, Saudi Arabia — This is what it takes to run a mega-dairy in the scorching desert here: 180,000 Holstein cows, precisely cooled cowsheds, water pumped from deep underground, feed from Argentina and a state-of-the-art refrigeration system. To transport chilled milk and other products all over the Arabian Peninsula, add 9,000 vehicles.