problems w with thei minds s if they use ththe intet too much, , and then thehey dt nt to o talk with ananybody eli go to school at 00 a.m. and i come back home at half past 4:00 p.m. i thk we havavlearned momore than teenage from otherr countrtries. host: today in g global ideas,e head to mongolia, a country known for its vast expanses of open, rolling grassland. but t this extraraordinary lande is under teat t from overgrazing, a potential ecological disaster. our reporter dan hirschfeld travelled to hustai national park, close to the country's capital, to find out what's being done to protect the asian steppes. reporter: the mongolian steppe can seem infinite. the grasslands here offer a perfect habitat for rare plants and animals. the steppe is home to mongolia's wild horses. almost extinct only a few years ago, this is the only place they can be found in the wild. it is also a paradise for deer, along with hundreds of bird and insect species. but these idyllic scenes are deceptive. outside the 2000 hectares of the hustai national park and other protected areas, this is what the mongngolian st