Title: Windows 8.
Question: What was the name of the Windows 8 advertising campaign?

Title: Glacier.
Question: With what speed does post-glacial rebound occur?

Title: Hard rock.
Question: The Sword, High on Fire, Witchcraft and Wolfmother are all examples of what hard rock sub-genre?

Title: New Delhi.
Question:
What is the name of the major railroad related museum located in New Delhi?