2.5 billion people lack sanitation, when Jack Sim turned 40 years old he left the construction industry and decided to devote the rest of his life to social impact. He's now constructing a 65,000 sq. ft "World Trade Center" for the poor in Singapore that intends to coordinate and transform the world's 4 billion financially insecure into a massively efficient marketplace to end global poverty.  World Toilet Day was established by the United Nations, November 19th 2013 in efforts to increase awareness around sanitation problems in poverty-stricken areas.