Green Roofs and Fast Trains

• A new LEED (Leadership in Energy and Environmental Design) certified house in Chicago sports a number of 'green' features, including solar panels hidden from street view by a V-shaped roof. But at $1.6 million, it didn't come cheap. (USA Today)
• China claims it has set a new record for fastest unmodified commercial train at nearly 500 miles per hour! (CNN)
• The latest Shuttle launch has been delayed because of extensive cracks in Discovery's external fuel tank. It appears that our shuttle fleet is showing its age. (USA Today)
• The Air Force's new secret space plane, the unmanned X-37B has successfully landed after performing secretive tests. Observers on the ground surmise it's purpose is probably quick-launch reconnaissance. Here's a Popular Mechanics cover story on the plane. (PM)