I guess my question about the Olympic athletes was too much of a stumper so I'll give you the answer: Carl Lewis (track/field, USA) and Steven Redgrave (rowing, UK) both won gold medals in 1984 in Los Angeles and 1996 in Atlanta. (The only other two times the same country hosted summer or winter Olympics twice within a 20-year span was in 1896 and 1906 [intercalated] in Athens, and Winter Olympics in 1964 and 1976 in Innsbruck)
Burj Dubai (Arabic: برج دبي "Dubai Tower") is a supertall skyscraper under construction in the Business Bay district of Dubai, United Arab Emirates, and is the tallest man-made structure ever built, despite being incomplete.
Normally the veins carry low oxygenated blood from the capillaries back to the heart. What are the only veins in the human body that regularly carry highly oxygenated blood?
In connection with an annual event going on even as this is written, what do the following people have in common: Martin Luther King Jr, Hillary Rodham Clinton, Christopher Reeve, Bill Clinton, Al Franken, Jimmy Carter and Barack Obama (twice)?