Why do people open their mouths when they apply mascara?

06 June 2014
Presented by Chris Smith, Redi Tlhabi.

Are mothballs poisonous? How do chameleons change colour? Where do seedless varieties of fruit come from? What is ash? How can we use DNA to trace ancestry? Why do people open their mouths when they apply mascara? What causes a stammer?

Add a comment

CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.