"We are some distance from understanding the jet stream well enough to manage the natural risks associated with structural integrity," adds Prof Keith Hjelmstad. — BBC News
Leo Kelion writes about the 'Tall Tower Project' an initiative inspired by author Neal Stephenson's simple question: how tall can we build something? Seeking the answer/limits Mr. Stephenson has begun exploring plans for a 20km (12.4 miles) tall tower. To learn more about the project or get involved see Tall Tower Project.