Rebecca Morelle Dec 18, 2012
The U.S. may be littered with skyscrapers, but by the end of the year, nearly three-quarters of the world's 100 tallest buildings will be located in Asia and the Middle East.
Kai Ryssdal Dec 4, 2012
How long will you wait for an elevator before becoming frustrated? Elevator expert Theresa Christy says 20 seconds is the industry standard.