A medical breakthrough for Africa, a floating garden cleans a canal, and now a girl with one arm can play the violin better than you can. This is the Mood Elevator, brought to you by Podiant. World’s first malaria vaccine to help prevent deaths in 3 African countries Germans Switch on ‘World’s Largest Artificial Sun’ This tiny floating garden is successfully cleaning the most polluted waterway in the US University students use 3D printer to make prosethetic arm for young violin player Generous customer gives waitress $500 after learning she needs new hearing aid You can find the show on Twitter and Facebook, and you can find Mark at @iamsteadman. Don’t forget to check out Podiant to get your next podcast project off the ground for free.