Science update
The end of the item we broadcast on iPM about featured the physics of a phenomenon known as the , where an object spins and curves in the air.
If you click , you can see it in action, while explains what's going on and how to do it yourself.
Eddie Mair spoke to Professor Michael Reiss about Planet Sci-Cast's efforts to popularise science on the internet.
Here's a full length version of the interview: