Without a doubt, water is the most abundant resource on Earth. After all, it covers over 70% of the planet - yet despite this we are facing a looming crisis as a species. Climate change, global conflict and overpopulation are just some of the factors that are devastating the water supply in many areas around the world. It means that two billion people - one-quarter of the human population - are without access to safe drinking water. As the world's population creeps ever closer to eight billion, attention is being focused on developing technologies that can help address this before it is too late.