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 January 15, 2019
On this date in 1919, a massive molasses tank wreaked havoc in Boston in a flood never seen before or after. And in 1943, this date brought completion of the world's largest office building. Find out more on today's Mark Almanac.