Some sample questions from this category:
* The first operation to implant an artificial heart in a human. What year was this?
* The discovery of the virus that causes AIDS was announced in Washington, D.C. What year was this?
* The wreck of the Titanic, the luxury liner that sank in April 1912, has been found. What year was this?
* Former dictator of the Philippines, Ferdinand Marcos, died in Hawaii. What year was this?
* The space shuttle, 'Challenger' exploded into a massive fireball, killing all seven astronauts on board. What year was this?
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