Published:Sunday | September 17, 2017 You can tell a lot about someone by what makes them come alive. Melarka Williams lights up when he talks about science, technology, his five-year-old daughter and his beloved Chelsea Football Club. With his six-foot stature, shaved head and glasses, Williams' appearance commands attention, because, simply put - he just looks smart. When you sit and talk with him, you realise his easygoing nature and ability to engage in an in-depth conver