1) The strongest natural material known to man is spider silk. It is stronger than steel and more flexible than nylon.

2) In Norse mythology, the Valkyries are divine maidens who serve Odin, the chief god. They are responsible for selecting warriors worthy of entering Valhalla and escorting them to the afterlife. They are often depicted as powerful and beautiful figures, riding winged horses and wielding spears.

3) The Tony Awards celebrate excellence in Broadway theater and have been awarded annually since 1947.

4) The Federal Reserve System, often referred to as the Fed, is the central banking system of the United States.