The South African city of Johannesburg has completed the first 3D-printed low-cost construction, using a technique that can build a house in less than 24 hours. The teenage computer programmer, John Oseni, is behind the project. He hopes his QR code scan-to-pay solution, VersusPay, can provide viable alternatives to payments in Nigeria. Ugandan model and beauty queen Judith Heard tells us about the challenges faced by young women when starting out in the fashion, modelling and beauty industries, and how she is using her success to address issues affecting her community and the environment.

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