Something unusual falls from the sky near 1965 Kecksburg, Pa.
Robert F. Kennedy is fatally wounded following his win in the California presidential primary.
Dallas strip-club owner Jack Ruby murders suspected JFK assassin Lee Harvey Oswald on live television.
Thousands of former Nazis help the United States to fight the Soviet Union.
Former FBI agents argue that evidence linking the Oklahoma City bombing to Middle Eastern sponsors and neo-Nazi militia groups has been ignored or covered up.
Numerous theories exist placing British power behind the deaths of Princess Diana and Dodi Al Fayed.
In the century following Abraham Lincoln's assassination, several conspiracy theories arise.
Charges of cover-ups and government complicity come soon after Martin Luther King Jr. is gunned down.
Since the late 1950s, an array of UFO sightings has been reported in the skies above Area 51, north of Las Vegas.
Two weeks after the Sept. 11 tragedy, news outlets become targets of a biowarfare attack.
Soon after the Japanese attack on Pearl Harbor, alternative explanations arise.
An elite group of scientists and officials may have covered up a mysterious incident in Roswell, N.M.
Witnesses to a passenger jet's explosion describe seeing lights streaking across the sky toward the plane.