Latin America is one region where four million people can't get clean drinking water.
But a new machine invented by engineers in Chile could change that.
Al Jazeera's Lucia Newman reports from Santiago.
More on our website: aljazeera.com
Follow us on Twitter: twitter.com/AJEngligh
Subscribe to our channel: bit.ly/AJSubscribe
Find us on Facebook: facebook.com/aljazeera