Didn't see this posted yet. There are currently two females left in the world, the daughter and granddaughter of the male who just died. Neither are able to reproduce naturally due to significant inbreeding. Artificial insemination followed by surrogacy in a southern white rhino is the only hope to keep the species going. And that's never been done before. Sad day.
https://www.theatlantic.com/science/archive/2018/03/sudan-northern-white-rhino-death/556058/
https://www.theatlantic.com/science/archive/2018/03/sudan-northern-white-rhino-death/556058/