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  1. The Tiananmen Square protests, known in China as the June Fourth Incident, [1] [2] [a] were student-led demonstrations held in Tiananmen Square, Beijing, China, lasting from 15 April to 4 June 1989. After weeks of unsuccessful attempts between the demonstrators and the Chinese government to find a peaceful resolution, the Chinese government ...

    • 15 April – 4 June 1989, (1 month, 2 weeks and 6 days)
  2. Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 a.m. MWT (11:29:21 GMT) on July 16, 1945, as part of the Manhattan Project.The test was of an implosion-design plutonium bomb, nicknamed the "gadget", of the same design as the Fat Man bomb later detonated over Nagasaki, Japan, on August 9, 1945.

    • July 16, 1945, (78 years ago)
    • Trinity Site, New Mexico
  3. On 18 June 2023, Titan, a submersible operated by the American tourism and expeditions company OceanGate, imploded during an expedition to view the wreck of the Titanic in the North Atlantic Ocean off the coast of Newfoundland, Canada.

  4. The Rockwell B-1 Lancer[b] is a supersonic variable-sweep wing, heavy bomber used by the United States Air Force. It has been nicknamed the "Bone" (from "B-One").[2][3] It is one of the Air Force's three strategic bombers, along with the B-2 Spirit and the B-52 Stratofortress, as of 2024[update]. Its 75,000-pound (34,000 kg) payload is the ...

  5. The attack on Pearl Harbor [nb 3] was a surprise military strike by the Imperial Japanese Navy Air Service on the American naval base at Pearl Harbor in Honolulu, Hawaii, in the United States, just before 8:00 a.m. (local time) on Sunday, December 7, 1941. At the time, the United States was a neutral country in the World War II conflict.

  6. Casualties of the September 11 attacks. The September 11 attacks of 2001 were the deadliest terrorist attacks in human history, causing the deaths of 2,996 people, including 2,977 victims and 19 hijackers who committed murder–suicide. Thousands [a] more were injured, [3] [4] and long-term health effects have arisen as a consequence of the ...

  7. High-performance liquid chromatography ( HPLC ), formerly referred to as high-pressure liquid chromatography, is a technique in analytical chemistry used to separate, identify, and quantify specific components in mixtures.

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