"This is a window into the future of Iraq after the American withdrawal, " Ware said.

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"It's a window into the future, " says Steven Nissen, a cardiologist at the Cleveland Clinic.

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But IPG's retail lab offers a window into what the future could hold.

WSJ: New Technology to Lure Shoppers

Bitcoin may or may not ultimately prove to be the right implementation, but it is a compelling concept that offers a window into a potentially profound paradigm shift in how we think about the future of money on the web.

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For children with STEM mentors in their families and neighborhoods, even a basic childhood activity like flying a kite becomes a lesson in aerodynamics, and a window into the wonders of the universe and future careers.

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