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The Wall Street Journal - 5 January 2011

"It's one thing to make an object invisible, like Harry Potter's mythical cloak. But scientists have made an entire event impossible to see. They have invented a time masker. Think of it as an art heist that takes place before your eyes and surveillance cameras. You don't see the thief strolling into the museum, taking the painting down or walking away, but he did. It's not just that the thief is invisible - his whole activity is... It is the first time that scientists have been able to mask an event in time, a concept only first theorized by Martin McCall [Physics], a professor of theoretical optics at Imperial College in London."