Why do banana peels go brown?

28 November 2014
Presented by Chris Smith, Redi Tlhabi.

Can you feel two pains at the same time? How can bottled water freeze instantly? Can a migrant dog understand his new neighbours? What is the pith inside an orange? Does eating the in-flight meal alter an aeroplane's weight? Why do skins of bananas blacken faster after you peel them?

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