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The proposed mosque tests the limits of American tolerance. United States – History – Religious – Islamic – Building Types

Productivity grew at a slower rate in the first three months of the year than previously thought, a possible sign that businesses are reaching the limits of their ability to boost output with fewer workers. Productivity – Business – Business Services – United States – Equipment and Supplies

MIT and utility NStar launch a $13 million, three-year program to push the limits of energy efficiency through upgrading lighting and heating and cooling equipment.

A Swedish artist who angered Muslims by depicting the Prophet Muhammad as a dog  is assaulted as angry protesters interrupt his university lecture about the limits of artistic freedom.

In a ratcheting up of tactics in a long, bloody war, drug cartel gunmen made seven especially brazen assaults on Mexican soldiers in one day this week.