This Day in History: May 18

Mount St. Helens

1980 – Eruption of Mount St. Helens. On this day in 1980, following an earthquake with a magnitude of 5.1 on the Richter scale, Mount St. Helens in Washington erupted in one of the greatest volcanic explosions ever recorded in North America.

Mark Zuckerberg

2012 – Facebook, an American company offering online social networking services, held its initial public offering, which raised $16 billion.


1974 – India detonated a nuclear weapon in the Rajasthan desert.

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