Dr Lesego Khomo is an environmental scientist based at Unisa. Since 2003, Dr Khomo has published 40 research papers on soil contamination, soil properties, soil degradation and fertility and other aspects of soil health. His publications can be viewed here: https://scholar.google.co.za/citations?hl=en&user=wasxa2cAAAAJ&view_op=list_works&sortby=pubdate