How old are Stephen hawking's siblings?

What has the author Mark O Kistler written? What are the Answers for the questions in the story Ice Age? What is the Difference between rising stem gate valve and non rising stem gate valve? What is the difference for Admissions Requirements and Program prerequisites for university? What are the correct cleaning and sanitizing procedure for pots and pan? Are brunettes smarter then blondes? What were the negative and positive results of European colonization of southeast Asia? Easy way to add up al numbers 1 to 100? How do you sign up for FBI? What does Charles Darwin's theory of evolution not explain? What operating system names its versions after big cats? What percent is 24 and 96? What are extra-capusular bursae? How the politics of the election of 1928 reflect the social changes of 1920? Why are people in Tibet call hermit? What takes place inside the cytoplasm? How do you write fifty two thousand dollars and two hundred fifty dollars? Can the difference of two mixed numbers be less than 1? Should you peirce your lip? What year did the US Supreme Court overturn the Georgia laws affecting the Cherokee?