Why did the Olympic swimming pool turn green?

12 August 2016
Presented by Chris Smith.

Why did the Olympic swimming pool turn green? Is it normal to get hiccoughs after eating spicy food? How accurate is carbon dating, and are there different types? Why do flying ants appear after the rain?... And what is the sun, really?

Add a comment

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