links for 2009-05-09

• 'The First Tycoon - The Epic Life of Cornelius Vanderbilt,' - Review - NYT
• Our Planet's Leaky Atmosphere - Scientific American
• U.S. Curbs Use of Species Act in Protecting Polar Bear - NYTimes.com
• Refuted/obsolete doctrines #7: New Keynesian macro - John Quiggin
• The April Employment Report — Center on Budget and Policy Priorities
• Deficiencies of the Unemployment Rate - FRB Cleveland
• Male Unemployment Rates At Or Near Post-War Highs - BusinessWeek
• Actual U.S. Unemployment: 15.8% - Economy Watch