Billions of people still don't drink or use water that is safe. One of the 17 Promises the world made was to ensure that everyone can get clean, safe water by 2030. Is there enough water for everyone? Less than half of the world's countries are unlikely to make this promise happen by 2030. Here… Continue reading Is There Enough Water For everyone?

What is a Patient Zero?

The expression patient zero comes from epidemiology. In medicine it describes the first person infected in an epidemic or a pandemic.  The expression patient zero comes from epidemiology (the study of the spread of disease.) Epidemiologists are kind of medical detectives. It is important to now where diseases start in order to control them. The term was first used widely in…… Continue reading What is a Patient Zero?