On this day:

1954: The first mass inoculation against polio is conducted using Virologist Jonas Salk’s vaccine which is still one of the two versions used today, along with Hilary Koprowski’s live polio vaccine.

1941: Glenn T. Seaborg and his team chemically identify Plutonium which is an important nuclear fuel.

1917: The February Revolution began in Russia which ultimately resulted in the demise of the Russian Empire.

Born on this day:

1965: Michael Dell, founder and CEO of Dell Technologies, one of the world’s largest technology infrastructure companies.

Gone on this day:

1855: Carl Friedrich Gauss: German mathematician

1821: John Keats: English poet