Hunga Tonga, a volcano in Tonga, erupted, which triggered tsunami warnings from the US and Chile to Japan and Australia.
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King Henry VIII became the head of the Church of England.
The World Economic Forum announced that there will be more plastic than fish in our oceans by as early as 2050.
US Airways Flight 1549 landed on the Hudson River, NYC.
Construction of The Pentagon was completed.
The world-famous Swan Lake ballet premiered in St. Petersburg at the Imperial Mariinsky Theatre.