Margaret Thatcher, the conservative British prime minister known as the "Iron Lady," died Monday following a stroke, her spokesman said. She was 87.
UPI Almanac for Tuesday, Dec. 25, 2012.
UPI Almanac for Thursday, July 5, 2012.
A 16-year-old in Germany who solved a centuries-old math problem credited his accomplishment to "schoolboy naivety."
The university in Israel that holds the complete archive of Albert Einstein's papers says the entire collection will be digitized and made available online.
British physicist Stephen Hawking said he was not well enough to attend his 70th birthday celebration and made a recorded speech instead.
Renowned British physicist Stephen Hawking, who turns 70 Sunday, says some things remain a mystery to him -- especially women.
UPI Almanac for Wednesday, Jan. 4, 2012.
UPI Almanac for Sunday, Dec. 25, 2011.
A New York collector charged with stealing historical documents from libraries in Baltimore has asked a judge to allow him to sell some of his valuables.
United Press International