The 2012 Summer Olympics in London is meant to showcase the world's athletes, but someone had to built the venues. Details about those projects and economic conditions dominated the headlines in Construction Dive's most popular reads of the last seven days.

If you feel like you have been out of the loop or just need a quick refresher, check out links to our most read news posts of the week down below:

• Contractors may go from work famine to worker famine in the recovery—A survey of construction executives finds they expect worker and leadership shortages in upcoming years.
• Mass. court rules unsigned, emailed land offer was an obligation—A Superior Court judge's ruling says that an unsigned offer in email can become a binding commitment to sell.
• Roofers say R values need to be adjusted for where products will be used—The National Roofing Contractors Association says climate and the kinds of fasteners used make revisions important.
• Building London: Fascinating facts about constructing the Olympic Village—The Games are about to open, but thousands of contractors began opening their toolboxes years ago to make it so.
• The QM way is likely to be the only way for mortgages in near term—The head of the Consumer Financial Protection Bureau tells Congress that Qualified Mortgage is likely to the only way to do business.

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