What does LD50 stand for?

More Questions:

On which wedding anniversary would you buy your partner leather?

What is the hobby of autograph collecting called?

Which Bohemian city gave us the Pilsner?

What rock group was behind the "Mudshark Incident" at Seattle's Edgewater Inn in 1969?

In what year was the hit game "Minecraft" released?

What is the name of Dr. Seuss's egg-hatching elephant?

In which country was the Rosetta Stone found?

Mt. Rainier is one of sixteen volcanoes in the world that is classified as what?

Who are Kambei, Katsuhiro, Gorobei, Shichiroji, Kyuzo, Heihachi, and Kikuchiyo?

What movie won an Oscar for "Best Picture" in 1991?

Who wrote the novel on which the movie, by the same name, "Jurassic Park" is based on?

During WWI, what disease caused 1/3 of all soldier's deaths?

Which city was formerly called New Amsterdam?

The surface of what is typically 70% water and 10% ice?

Who did Perseus turn into stone with Medusa's head?