It's astonishing what you can stumble across!

There I was in my living room last night looking for that programme (which I was speaking about yesterday) about the National Grid - when I stumbled across another documentary on quite another channel. It was called "The World's Toilet Crisis". With a title like that, I just had to know more.

Well, I still cannot get it out of my mind. Unbelievable! It was about the fact that we (at least in certain countries) are drowning in a sea of our own human waste.

Apparently, an estimated 40% of the world's population has no access to toilets and defecate anywhere they can. This documentary investigates how developing countries are trying to solve an epidemic that few people want to talk about--the world's toilet crisis.

If you want to see it - it's uncomfortable viewing but I'd recommend it!

ALSO if you want to join in on the BBC's Hands on History project - send us your photos here.