leadingsome farmersto to think the unthinkabl in a cntry where rice enjoys almost god-like status ging up its cultivatn is not an easy decision on make. but for 24-year, hardship leftim no choice. reporter: so he learned how to grow bananas instd. a decion that was not popular with his father. [ speaking in native tone ] >> reporter: and hisopposition crumbled, the day his wife came ck from market, having sold thebanana crop for doubly the amount thathey're get for ce. annow the whole family's committed to growingananas. works for the agency, practical action, who run crop bstitution programs like th one. but it is he hielf ctions climate ange will rain a seous challenge for the people of nepal. >> ifhe climate woens and thent may not be able to ovide. and then ain they have to swit into other crops. and erefore theyhave to adapt to the climate scenio, consequences. they cannot at this time impa the climatehange and then they ll lostthe crop. imagine 's situation that do or die. either you adapt oyou will die. >>> for more on climate chge and hothe world is responding we invited bo lim