Why do veins look blue?

20 January 2012
Presented by Chris Smith, Redi Tlhabi.

How much water should you drink in a day? Can miscarriages be prevented? What's more efficient - leaving the hot water on constantly, or heating it only when needed? Why are some eggs double yolkers? What's the point of flies? And why do some people have more than five fingers? Join Dr Chris for another crop of South Africa's top science questions on Talk Radio 702...

Add a comment

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