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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 May 12, 2021

Inventor Nathan Stubblefield pictured with his wireless telephone.
Murray State University
Inventor Nathan Stubblefield pictured with his wireless telephone.

It was on this date in 1789, British MP William Wilberforce gave his first speech to Parliament on the abolition of slavery. And it was on this date in 1908, Nathan B. Stubblefield filed a patent for wireless radio broadcasting.