By BBC World Service
Published October 15, 2019 3:00pm
The first African smartphone factory, where phones are made from scratch, opened this week in Rwanda. The smartphones are designed for the African market, so they are being made as affordable as possible, while being accessible and secure.
TunabotProfessor Hilary Bart-Smith at the University of Virginia, USA went back to basics to develop a fast swimming robotic tuna - the tunabot. They took detailed anatomical data from the Yellow-finned tuna and Atlantic mackerel and 3D printed the fast tunabot. The tunabot swims faster than existing tunabots by increasing the frequency with which its tail beats. <...