Katye Altieri writes that global concerns about the environmental impacts of shale gas development and production on local water supplies, air quality and human health have made the process of extracting this natural gas – called hydraulic fracturing, or ‘fracking’ – a very contentious issue.
He’s quick. He’s powerful. He’s competed across the world, from the All Africa Games in Dakar to the Paralympics in Rio de Janeiro.
Africa has the highest number of water-scarce countries in the world and cannot afford to lose water through leaks in pipes. Professor Kobus van Zyl has spent the last 15 years investigating the infrastructure that leads to these leaks; and he and his team have recently invented a device that could change the game.
UCT electrical engineer and senior lecturer Samuel Ginsberg has had a hand in inventing such diverse devices as a heat detector for informal settlements, an expandable surgical implant for children, a low-cost hearing aid and a wearable device that measures ambient CO2 levels.