Christian nearly drowned while swimming in the sea in Italy as a child. He returned to the beach with his wife and child - only to find that Yuri, the man who saved his life, was still there. The two men tell us about their emotional reunion and the profound effect the experience has had on them. Also: The New York couple who found a safe full of cash, and get to keep it, thanks to the increasingly popular hobby of magnet fishing. We speak to Yazzy Chamberlain and her grandad John, whose duets of classic songs have earned them millions of online viewers -- including Coldplay. How the powers of nature are being used to help solve water shortages in Mexico City by cleaning polluted rivers. The skull of a giant prehistoric bird known as the demon duck has been found in Australia. And don't waste a moment - the final message from Rob Burrow, rugby league star and Motor Neurone Disease campaigner.

Our weekly collection of happy news and positive stories from around the world.