guillermo pina andrase is still testing it out. and soon he'll be selling his first harvest of shrimp. host: this week in our global ideas series, we're off to the caucasus. our reporter, maria lesser, headed to georgia to meet the resourceful l residents s of e enerergy to heat waterer, whics noa knock-k-on effect.g solar it protects local forests. rereporter: at 6 6:30 a.m., na gubabanidze tchehes thhot water, likike she does evevery morning.g. the cow's s udder has toto e cleaeaned before m milking. a littlele later, as w well ase family's b breakst, she e kes cheese. it requires lolot of piencnce. she can tell the cheesese is rey when the c consistency is s ju right. everyththg here runs like clockwork,itith no te fofor brbrks. nana: as a housewife i have lot worork too. i clcln, make the food, milklk e cowsws, and lots of f other th. there's always something to do. reporter: nana gurabanidze is , , and was a nunurse for 30yea. she lilives with herer husband,, daughthter-in-law, a and grandchildreren. nana: i always need howate

after 25 years as an agricultural engineer, guillermo pina andrase turned a chapter. now he's pursuing a new career as a shrimp farmer. guillermo: our breeding method is much healthier than traditional methods. you don't need nearly as many antibiotics. and because of the roofs that cover the ponds, you can control temperatures better. also, because the water isn't changed, you have more control over pathogens. reporter: a pond like this yields around 80 to 100 shrimp per square meter of surface area, a lot more than traditional breeding methods. that's largely down to the fact that more creatures survive, and grow larger as well, significantly increasing their value on the hard-fought global market. guillermo: people who try them have told me that the consistency of the flesh is firmer, so it's better. and they say that the taste is exactly the same. reporter: and that, even though the shrimp are being raised in freshwater rather than saltwater, an innovation that allows farms to be set up practically anywhere, rather than only along the coast. but it t the animals a