In 2017, one in every three people still don't have access to a toilet. As part of a playlist on biology, an interesting video explains this global health topic. It describes society before toilets, disease research throughout history,...

From a news story in 2013, ten cases of polio have been confirmed in Syria- the first appearance of the disease in the country since 1999. PBS NewsHour explores how the outbreak adds to the challenge of the humanitarian crisis and how...