/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: robertelevin https://cdn.slidesharecdn.com/profile-photo-robertelevin-48x48.jpg?cb=1561654302 Member, TED Member, World Economic Forum Board of Trustees, Water Discovery Center former Adjunct Professor, Columbia University Author, Editor, 2 books Inventor, Patent Holder