Housing preferences are changing for aging Americans right now, and those trends, as well as some hot topics regarding LEED rules showed up in this week's most popular Construction Dive posts. Have a look at those stories and more at the links below.

• Skanska to U.S. Chamber: No LEEDv4, no Skanska: In a dispute that revolves around whether LEED will effectively be blocked as a standard for federal buildings, Skanska USA has withdrawn from the U.S. Chamber of Commerce.
• Consultant believes he can read 'IT' leaves for construction economy omens: Consider this argument: If corporate IT types are in no hurry to hire because they have doubts about the recovery, how much construction will their companies need?
• The 55-plus market: This is not your father's Oldsmobile, or his apartment complex: Note to developers and contractors: Today's 55-and-older residents want anything but the single-generation retirement communities of their parents .
• Four new ideas for LEED credits join 'pilot' program offerings: The pilot program puts suggestions for new ways to earn LEED credits up for testing and discussion among members.
• 10-year, $2B Mall of America expansion underway: Drawing 42 million visitors—13% of the U.S. population—each year will look antiquated after Triple Five Worldwide pours $2 billion into expanding the Minnesota landmark.

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