What is the only mammal naturally capable of true and sustained flight?

More Questions:

With which hand do soldiers salute?

What are the main ingredients in a Cafe Cubano?

What does the double-O indicate in 007?

Who wrote the collection of Science fiction stories that made up the book "I, Robot"?

What is the deepest part of the Atlantic Ocean?

What is the capital of Mozambique?

Who averaged one invention patent for every two weeks of his working life?

Who on TV played Jeeves to Hugh Laurie's Bertie Wooster?

In what movies is the Okinawan sword-maker Hattori Hanzo a character?

What 1985 movie takes place at the Sunny Shores retirement home?

Who sang "Singing in the Rain"?

What nationality is actor Anthony Hopkins?

What movie, directed by the Coen brothers, won an Oscar for "Best Picture" in 2008?

Where did Al Capone spend the majority of his 1931 sentence for tax evasion?

In the opera, "The Marriage of Figaro", who did Figaro marry?