Yesterday, President Obama toured a training facility at Savannah Technical College and took the opportunity to outline more detail on the proposed HOMESTAR Energy Efficiency Retrofit Program. The program has been called "Cash for Caulkers" due to similarities with Cash for Clunkers, but we're going to stick with the HOMESTAR terminology. Here's some additional detail.
Despite the fact that we are now living in the 21st century, aerogel insulation seems like a material out of science-fiction. It is the lightest solid known, although by volume it is 99% air. It is breathable, but it doesn't absorb water. It is incredibly strong for its weight. But most importantly, it is a fantastic insulator.
Putney School, a prep boarding school for grades 9-12, needed a field house and retained Maclay Architects to design a green one. Literally. The ~$5 million green building is one of only a few net-zero energy buildings of its kind. It's also a contender for LEED Platinum certification and boasts a number of impressive green elements.