2.4 billion people (one third of the world’s population) do not have access to a decent loo. They either have to share a toilet with many other people or  have no access to a toilet at all and have to poo outside (a practice known as open defecation). Matt Damon is one of a handful of movie stars who is bringing this appalling statistic to wider attention. One way is this really funny video.

Matt Damon breaks up with his toilet!