In 2001, researchers produced pulses of what lasting only about 650 attoseconds, or billionths of a billionth of a second?

Ben Affleck and Josh Hartnett starred in which 2001 Michael Bay war film? Mariah Carey starred in which 2001 movie, a box-office misfire with a shiny title? Marisa Tomei plays the older woman in a summer romance in which 2001 drama? The tagline "One ring to rule them all" promoted which 2001 film? Which South Dakota Democrat was Senate Majority Leader for most of 2001 and 2002? Will Smith played which poetic boxer in the 2001 film "Ali"? Which 1960s quartet's 2000 compilation "1" collected its No. 1 hits and became one of the best-selling albums of the de… Michael Gambon played which president in the 2002 HBO film "Path to War"?