Whilst researching for something else, I came across the video below on YouTube. I quite like this video, as it shows a few interesting facts that are often missed, and using the environment of a video without any spoken words to portray the point.
What is very interesting is this video has been viewed (at the time of writing) nearly 3 million times, and there have been nearly 8,000 comments on YouTube against this video and even though this video was added a year ago, there is still an active discussion raging on this video. Its a powerful medium is YouTube. Enjoy!