Watch a 2,500-Foot Wall of Dust Swallow Phoenix

Sept. 7 (Bloomberg) -- A wall of dust swept through Phoenix on September 7, traveling at 30 miles per hour and reaching a height of 2,500 feet, where it was captured via helicopter.
Many People Capable of Being Mark Zuckerberg: Khan
30:31 - Khan Academy's Sal Khan and Emily Chang discuss finding the next Mark Zuckerberg. They speak on this week's edition of Studio 1.0. (Source: Bloomberg)
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