Tanzania, July 17 -- Dar es Salaam. A rescue robot designed to access disaster zones beyond the reach of emergency workers, a low-cost cooling fan for low-income households and an excavator prototype have propelled three Tanzanian secondary schools onto the continental stage after their creators won a national Science, Technology, Engineering and Mathematics (STEM) innovation competition.

The projects, developed by female students from Kibasila, Jangwani and Charambe secondary schools, secured Tanzania a place in the African STEM competition organised by the World Association of Girl Guides and Girl Scouts (WAGGGS) through the Youth Exchange South to South (YESS) programme. The students will now compete against young innovators from acro...