Look out of the window of a passenger airplane, and the chances are you'll spot an upturned "winglet" at the end of the wing. While they're a handy place to display the airline's logo, they also perform some crucial flight roles. Here's why most modern airplanes now have them. http://dlvr.it/SNZjSL
Built in the 16th and 17th centuries, Europe's geometrically perfect "star cities" were engineered by some of the most brilliant minds of their time, but their wonders can only be truly appreciated from the air http://dlvr.it/Rr8LG3
Green fingered enthusiasts will be able to freely roam the gardens of London's historic Buckingham Palace this summer, as Queen Elizabeth II allows self-guided tours of the grounds for the first time in the palace's history. http://dlvr.it/RxHQvT
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