Video: 'Energie atomique : Albert Einstein; Dr. Leo Szilard'

(Wednesday, August 2, 1939) — German-born theoretical physicist Albert Einstein signed a letter today written by Hungarian-German-American physicist and inventor Leo Szilard and addressed to U.S. President Franklin D. Roosevelt, warning that Nazi Germany might develop an atomic weapon and suggesting that the United States should start its own nuclear program. Continue reading Einstein signs letter urging FDR to build nuclear weapons 80 years ago #OnThisDay #OTD (Aug 2 1939) →

Video: 'George Clinton (vice president)'

(Thursday, July 26, 1739) — George Clinton, the fourth Vice President of the United States, who served from 1805 until his death in 1812 during the administrations of presidents Thomas Jefferson (1805–1809) and James Madison (1809–1812), was born today in Little Britain, Province of New York, British America. Continue reading U.S. Vice President George Clinton born 280 years ago #OnThisDay #OTD (Jul 26 1739) →

Video: 'July 25, 1969: Ted Kennedy addresses Chappaquiddick accident'

(Friday, July 25, 1969, 7:00 p.m. p.m. EDT; during the Chappaquiddick incident) — U.S. Senator Edward “Ted” Kennedy went on television tonight to ask his Massachusetts constituents to give him “your advice and opinion” about whether he should resign his office one week after a fatal accident at Chappaquiddick Island near Martha’s Vineyard which resulted in the death of his passenger, 28-year-old Mary Jo Kopechne. Continue reading Ted Kennedy asks voters to decide if he should quit 50 years ago this hour #OnThisDay #OTD (Jul 25 1969) →

Video: '1969 report on Ted Kennedy's accident at Chappaquiddick Island'

(Friday, July 18, 1969, approximately 11:30 p.m. EDT; during the Chappaquiddick incident) — U.S. Senator Edward “Ted” Kennedy, the 37-year-old younger brother of President John F. Kennedy and Senator Robert F. Kennedy (both of whom were recently assassinated), drove an Oldsmobile 88 automobile off a bridge on Chappaquiddick Island near Martha’s Vineyard in Massachusetts late this evening, leading to the death of his female companion, 28-year-old Mary Jo Kopechne. Continue reading Woman passenger killed as Ted Kennedy escapes car accident on Chappaquiddick Island 50 years ago this hour #OnThisDay #OTD (Jul 18 1969) →

Video: 'JFK JR.'S PLANE IS MISSING (LIVE TELEVISION NEWS COVERAGE FROM JULY 17, 1999)' (11:15 a.m. EDT-5:15 p.m. EDT)

(Friday, July 16, 1999, approximately 9:41 p.m. EDT; during the John F. Kennedy Jr. plane crash) — 38-year-old John F. Kennedy Jr., the son of former U.S. President John F. Kennedy, his 33-year-old wife, Carolyn, and her 34-year-old sister, Lauren Bessette, died tonight when their single-engine plane, piloted by Kennedy, plunged into the Atlantic Ocean off the Massachusetts island of Martha’s Vineyard. Continue reading JFK Jr., wife, sister-in-law killed in plane crash 20 years ago this hour #OnThisDay #OTD (Jul 16 1999) →