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The promise of 3-D printing is tantalizing: You envision something, draw it with the right software, and then print it in three dimensions??regardless of how many parts it has, how they interlock, or whether they will even be accessible once your creation is completed. With this strategy, anyone can make almost anything. Someday, lots of stuff will be manufactured this way, on demand.
In 1967, the airlines were flying Boeing 727s and Douglas DC-8s. Air travel was still special, and the airlines were raking in cash. But a problem loomed, and it was potentially calamitous. The airlines had placed their orders for the first widebody aircraft–the 747 and the DC-10–and these giant planes would dramatically boost the number of people arriving simultaneously at customer service counters...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.