On this day in 1953, almost 72% of all television sets in the United States were tuned into I Love Lucy to watch Lucy give birth.
On this day in 1983, Nazi war criminal Klaus Barbie was arrested in Bolivia.
On this day in 1993, Czech Republic and Slovakia joined the United Nations.
On this day in 2012, the Hong Kong-based file-sharing website Megaupload was shut down by the FBI.