On this Christmas edition of The World, we check in on the Greek island of Lesbos, where thousands more refugees from Syria and Afghanistan are being welcomed. But, as we'll hear, the welcome is wearing thin. Also, what's the top Christmas Day song in the UK? If you guessed Justin Bieber, try again. If you guessed a choir of doctors and nurses, you already knew the answer. Plus, we bring you a story about the little-known history of Siberians in Hawaii, and how one woman has a heart-to-heart conversation with her grandparents - when she only speaks English, and they just speak Chinese.