He studied architecture and industrial design at Delft University of Technology. Olthuis is founder of the Dutch architectural firm, Waterstudio.nl, that specializes in floating structures to counter concerns of floods and rising sea levels. In 2007, Olthuis was ranked #122 in TIME Magazine's readers' poll of "the most influential people of the year". In 2010, together with David Keuning, Olthuis authored a book called Float, which discusses construction on water. Contact Koen