Boniface Jiveri, a researcher currently working at Kaimosi Friends University College, has invented a clean cooking and lighting fuel that peri-urban and rural poor can use. The fuel, Bio-gel, is also a mosquito repellent and air freshener. In addition, Jiveri generates organic fertiliser from the waste that is used to produce the gel.

He explains that the process of making his Bio-gel fuel involves crushing egg shells to produce calcium carbonate. It has also been found to reduce carbon emissions by 80 per cent.

Read more: Daily Nation