Uber became a public company, opening on the New York Stock Exchange.
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The USSR attempted to launch an uncrewed spacecraft to Mars.
Nelson Mandela was sworn in as South Africa's first black president.
An atomic submarine circumnavigated the globe.
Mother's Day was officially celebrated for the first time in Grafton, West Virginia.
US Geological Survey issued a statement revealing that 39 Montana glaciers have reduced in size from 39 to 85 percent in the last 50 years.
