Subtitled in Mongolian18:52Making sense of string theoryBrian GreeneTranslated by Tuya ErdenejargalReviewed by Ariunzaya Lkhagvasuren
Subtitled in Mongolian9:47Global population growth, box by boxHans RoslingTranslated by Ariunzaya LkhagvasurenReviewed by Tuya Erdenejargal
