Cuban Barber Shop, Old Havana, Cuba, 2010
Cities prosper through spontaneous enterprise, not top-down planning.
America, are you happy? The emotional words contained in hundreds of millions of messages posted to the Twitter website may hold the answer.
Computer scientist Alan Mislove at Northeastern University in Boston and colleagues have found that these "tweets" suggest that the west coast is happier than the east coast, and across the country happiness peaks each Sunday morning, with a trough on Thursday evenings. The team calls their work the "pulse of the nation".
To glean mood from the 140-character-long messages, the researchers analysed all public tweets posted between September 2006 and August 2009. They filtered them to find tweets that contain words … [READ MORE]
The enigmatic Canon 1 a 2 from J. S. Bachs Musical Offering (1747), The manuscript depicts a single musical sequence that is to be played front to back and back to front.
Articles by Mark Cuban on success and motivation (a four part series).
The Mona Lisa's lure is so strong that Louvre Museum officials find it wise to keep her safely stowed behind bulletproof glass. She is let out of her protective cage once a year, for a whiff of fresh air. And this is when many a researcher would love to get their hands on Leonardo da Vinci's most famous muse, in order to find out more about how she was painted.
For a long time, scientists and curators have wondered how da Vinci created shadows on her face with seemingly no brushstrokes or contours. Art experts call this shadowing techniqueAsfumatoalike the Italian word for smoke,Afumo. Experts have long suspectedAsfumato shadowing has something to do with the glazes that da Vinci used above the paint layer. But proving this has been difficult because snatching a sample of the Mona Lisa's face for chemical analysis is, unsurprisingly, frowned upon.