Title: 2008 Sichuan earthquake.
Question: How did the move the relief supplies from Taiwan to the stricken area?

Title: Geography of the United States.
Question: What is the precipitation average in the Intermontane plateaus?

Title: Immunology.
Question: When did immunology start to become codified as a scientific theory?

Title: Elevator.
Question:
In the mid 1800s what were elevators fueled by?