Geo answer

The answer to today’s Geo Quiz is the Tibetan city of Nagqu, where China plans to build the world’s highest airport at an altitude of 14,500 feet above sea level. The new airport could be a welcome boon to the local economy, but critics say it’s another way for China to tighten its grip on the region. Anchor Jeb Sharp finds out more from Elliot Sperling, a professor of Tibetan Studies at Indiana University.