sound barrier

Judge Halts Road Work on I-270 in Rockville A Montgomery County judge is ordering the State Highway Administration to halt work on a sound barrier along Interstate 270 in Rockville.
Free Falling: Man Plans Record-Breaking 120,000-Foot JumpA man is hoping to break the world record for the highest jump in history - by leaping from the Earth's stratosphere. According to NPR, Austrian pilot and skydiver Felix Baumgartner plans to jump from a staggering height of 23 miles - which equals out to just over 121,000 feet.