The Empty Quarter, or Rub’ al-Khali in Arabic, is one of the world’s largest deserts. Spanning nearly 650,000 square kilometers—mainly in Saudi Arabia—it dominates the Arabian Peninsula, with dunes ...

The desert covers over 3.3 million square miles, which means it's roughly the same size as the entire United States.

An international team of researchers, including scientists from UNIGE, has discovered that the Arabian Peninsula's desert was once shaped by a massive lake and a network of rivers. The Rub’ al-Khali, ...

The Empty Quarter, or Rub' al-Khali in Arabic, is one of the world's largest deserts. Spanning nearly 650,000 square kilometers -- mainly in Saudi Arabia -- it dominates the Arabian Peninsula ...