• Building a greener America.
• Make Freddie and Fannie go green.
• How many carbs does your building have?
• Study finds benefits to walkable neighborhoods.
• Find and fix your home’s power hogs.
• The future of plug-in hybrids.
• Colleges taking steps to go greener.
• Gas prices drive push to reinvent suburbs.

*WIR = Week in Review; a Saturday showcase of excellent links.