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Arts & Culture
Mark Pennell sits at the helm of his time machine.Mark's Almanac is a 90-second time travel that highlights the world's history from the very serious to the sometimes sublime.

Mark's Almanac for July 31, 2019

On this date in 1790, the first-ever patent was issued in the United States. And in 1964, a new device helped push the exploration of the moon move forward.