Dr Chris Smith, fondly known as the 'Naked Scientist' is in South Africa for a special live broadcast of his feature on the Redi Tlhabi show.
Dr Smith talks science and answers listeners' questions every Friday morning and has become a firm favourite with 702 and CapeTalk listeners.
The award-winning Naked Scientist is also a medical consultant specialising in clinical microbiology and Clinical Lecturer in virology at Cambridge University.
Watch the Naked Scientist live:
Watch his live broadcast from 702 last year:
Children and parents filled the Primedia entertainment area and used the opportunity to ask their scientific questions. 'Mr Know it all', Dr Chris Smith, didn't disappoint.
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