What is a authuor?

What are the theatre masks called that look happy on one side and sad on the other side? What is the episode of Gilmore Girls with the story of how Lorelai couldn't afford Christmas when Rory was five so the town surprised them with presents from Santa? Why is light used in astronomy? Where is Nubia in relation to Egypt? How old is David Letterman's son Harry? Is Emmerdale Effie Woods also know as Priya Sharma coming back? Who organized the first pan-African conference in 1900s? Is the PS2 reverse compatible with PS1 games? What jobs did Hopi Indian children have? Who is snsd sunny exboyfriend? What is the superimposed stream? Why are my newly bought African dwarf frogs not eating the HBH frog and tadpole bites I bought for them? Is Jessica jung alive? How has the river nile helped Egypt? Which planet in our solar system is most habitat besides earth? Did Nathan kress have braces? What height is joe mcelderry? How many days in Zombie Apocalypse? Can following a crowd have disastrous consequences? Which country in South America borders Trinidad?