Subtitled in Korean5:02Why is it so hard to cure the common cold? TED-EdTranslated by Khole ChaReviewed by DK Kim
Subtitled in Korean5:25Could this technology end all viruses? TED-EdTranslated by Khole ChaReviewed by 혜령 김
Subtitled in Korean5:26Why you procrastinate even when it feels badTED-EdTranslated by Khole ChaReviewed by Taehan Yoon
