What was the name of the first nuclear-powered submarine launched by the U.S. Navy?

USS Nautilus

Which country contains Great Bear Lake? During Christmas in the UK, what sweet pie usually filled with dried fruits is traditionally served? Which X-Men character has optic blasts powered through solar energy? Who was the first MLB player to hit a home run from both sides of the plate in the same inning? Which German philosopher wrote "Thus Spoke Zarathustra"?