Is petrol better value when it's cold?

25 April 2014
Presented by Chris Smith, Redi Tlhabi.

How can cochlear implants deliver gene therapy? Are you better off circumcised? What is the biggest discovery of the last 20 years? Can planets exist without a parent star to orbit? Does lighting a match mask a bad smell? Are there devices to help achieve perfect pitch? And do i get more petrol for my money when it is cold?

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