Today is the 64th day of 2015 and the 75th day of winter.
TODAY'S HISTORY: In 1770, British troops fired into a crowd of Americans, killing five, in what became known as the Boston Massacre.
In 1946, Winston Churchill used the phrase "iron curtain" during a speech that is often regarded as marking the beginning of the Cold War.
In 1970, the Nuclear Non-Proliferation Treaty went into effect following ratification by 43 nations.
TODAY'S BIRTHDAYS: Howard Pyle (1853-1911), author/illustrator; Rex Harrison (1908-1990), actor; James Tobin (1918-2002), economist; Daniel Kahneman (1934- ), economist; Dean Stockwell (1936- ), actor; Penn Jillette (1955- ), comedian/magician; Andy Gibb (1958-1988), singer; Joel Osteen (1963- ), televangelist; Michael Irvin (1966- ), football player; Lisa Robin Kelly (1970-2013), actress; Kevin Connolly (1974- ), actor; Eva Mendes (1974- ), actress.
TODAY'S FACT: John Adams, who would later be the second U.S. president, served as the attorney for the British soldiers who took part in the Boston Massacre and successfully defended them on murder charges.
TODAY'S SPORTS: In 1993, Canadian Olympic sprinter Ben Johnson received a lifetime ban from competition after testing positive a second time for performance-enhancing drugs.
TODAY'S QUOTE: "The idea that the future is unpredictable is undermined every day by the ease with which the past is explained." -- Daniel Kahneman, "Thinking, Fast and Slow"
TODAY'S NUMBER: 189 -- signatories to the Nuclear Non-Proliferation Treaty as of February 2014. North Korea withdrew from the treaty in January 2003; among U.N. member states, India, Israel, Pakistan and South Sudan have never signed the treaty.
TODAY'S MOON: Full moon (March 5).