by: Frédéric Filloux | Guardian.co.uk

Paul Steiger is one of the men I admire the most in my profession. Five years ago, at the age of 65, and after a 16-year tenure as the Wall Street Journal's managing editor, he seized the opportunity to create a new form of investigative journalism. Steiger created ProPublica, a non-profit newsroom dedicated to the public interest and to deep dive reporting. He hired a bunch of young staffers (coached by seasoned editors and reporters) that could help him lift data journalism and computer-assisted reporting to the highest level. Thanks to wisely managed partnerships, he gave ProPublica a wide audience and the quality and breadth of his newsroom's reporting landed it scores of awards, including two Pulitzer prizes.