Al Rosen is a forensic accountant and principal of Rosen & Associates in Toronto. He writes frequently for Canadian Business magazine.

Andrew Wahl is a senior writer with Canadian Business. He has been with the magazine since 1998 reporting on a wide variety of topics including telecommunications, wireless technologies, corporate IT, venture capital, environmental governance and hedge funds. In addition to his column for the magazine, he writes a blog, Wahl on Tech, for Canadian Business Online.

Calvin Leung is a staff writer with Canadian Business and writes about investing and other topics. Prior to joining the magazine, in 2005, he worked in sales at Procter & Gamble, in marketing at Unilever and in advertising as a freelance copywriter.

David West, CFA, FCSI, has been in the investment industry for more than 20 years. David writes about income trusts and mutual funds for Canadian Business Online; he is also editor of two private financial advisory newsletters; is contributing editor to the MoneyLetter; and provides investment courses to major financial institutions.

Jack Mintz is the Palmer Chair in Public Policy at the University of Calgary. He writes frequently for Canadian Business magazine.

Joe Castaldo is a staff writer for Canadian Business. He joined the magazine in January 2007 and has written about a variety of topics, including management issues and investing. For Canadian Business Online Joe writes about clean technology — companies, tech developments, and environmental policy and investing.

Larry MacDonald is a former economist who now manages his own portfolio and writes on investment topics. He is the author of several business books, including corporate biographies of Nortel and Bombardier. His column appears every second Thursday. Read Larry's Investment Ideas blog here.

Rachel Pulfer is the U.S. correspondent for Canadian Business. A journalist since 1999, and features editor of Canadian Business from 2005 to 2007, she has been nominated for three National Magazine Awards. In Letter from America, her online column, Rachel comments on economic and cultural developments in the U.S. and their significance for Canada.

Thomas Watson is a senior writer with Canadian Business. Prior to joining the magazine, he was a financial journalist and feature writer at the National Post, where he focused on the technology, auto and steel industries. His column for Canadian Business Online appears every other week.