Nearly 800 million people worldwide don't have access to safe drinking water, and some 2.5 billion people live in precariously unsanitary conditions, according to the Centers for Disease Control and Prevention. Together, ...
Jul 06, 2015 in Nanomaterials
Toilets are taken for granted in the industrialized West, but still are a luxury for a third of the world's people who have no access to them, according to a report by the World Health Organization and UNICEF.
Jul 01, 2015 in Social Sciences