When listener Sophia decided to donate a kidney to a stranger through a domino transplant scheme, her teenage daughter Katie objected. But years later, Katie decided to do the same - inspired by the chain of goodness her mother started, and the joy of meeting organ recipients at the transplant games. Also: Big Ocean - the first K-pop band whose members all have hearing impairments. As the Paris Olympics approach, we look back at the amazing story of two athletes who chose to share gold in Tokyo. Wild horses return to Kazakhstan for the first time in over two hundred years, thanks to a zoo breeding programme. The innovative system helping grow crops in arid regions with less water. And the children who got to perform at London's famous Royal Opera House.

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