British singer-songwriter Lily Allen released her first album, “Alright, Still,” in the UK.
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New York City experienced a 25-hour blackout when a substation on the Hudson River was struck by lightning, causing two circuit breakers to trip.
Swedish-American inventor John Ericsson patented the screw propeller design.
Donald Trump survived an assassination attempt during a campaign rally in Butler, Pennsylvania.
The USSR's Luna 15 robotic spacecraft was launched from the Baikonur Cosmodrome in Kazakhstan.
John F. Kennedy was nominated as a presidential candidate by the US Democrats.