Blue and green bonds have emerged as a potential way for African nations to close a massive financing gap. Bloomberg's Yinka Ibukun explains how water bonds could help play a role. -------- More on Bloomberg Television and Markets Like this video? Subscribe and turn on notifications so you don't miss any videos from Bloomberg Markets & Finance: https://tinyurl.com/ysu5b8a9 Visit http://www.bloomberg.com for business news & analysis, up-to-the-minute market data, features, profiles and more.