f. duncan holdane for top logical faces of matter. >> all three are now based at univiversities i in the u.s. in the 1970s, kosterlitz showed that superconductivity can occur in thin layers. they also demonstrated that it could occur at low temperatures and explained why it disappears at high temperatures. in the '80s haldane used small magnets. hoping materials can be used in new generations of electronics and superconductors or in future quantum computers. >>> south korea's economy has focused on high-tech engineering and the country's boosting open market policies to increase its competitiveness. but while that's good for those industries, agriculture has lost momentum. nhk world reports on what's happening to korean beef. >> reporter: this man has dedicated his life to beef productions. he these days he worries about consumers turning away from beef. >> translator: consumers prefer hanu over imported beef because of the flavor but they tend to buy it because of their price. >> reporter: more than half the beef in south korea now comes from abroad. much is shipped in from the u.s. and