Max Planck proposed Planck’s Law, a new law of physics for black-body radiation.
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The American Revolutionary War hostiles ended after the British conceded at Yorktown.
Researchers at Rutgers University in New Jersey, US, isolated Streptomycin, which became the first antibiotic remedy for tuberculosis (TB).
A bill to recognize Martin Luther King Jr's birthday as a national holiday passed the US Senate.
University of California scientists found evidence that life on Earth probably began 4.1 billion years ago.
Cher's 'Believe' was released and became the Billboard 1999 Song of the Year.
