We all have that one friend who just loves to drop random facts into conversations, just to prove they know stuff. For Dermot, Dave is that friend!

If you’ve ever wondered why airports are laid out the way they are, what you can do at the speed of sound, or what colour eyes you’re best off having, then Dave’s World is the place for you!

This morning, our walking encyclopedia revealed an astonishing fact about Elvis' music, chatted about some cosmic wifi, and gave us a few more nuggets about a couple of the world's most famous bands.

You can listen to the fun in full by pressing play in the image above the headline at the top of the page.