What keeps the Earth's atmosphere from leaving the planet?

More Questions:

What country does Cafe au lait originate from?

What is the point value for each of the vowels in the board game Scrabble?

What flower symbolizes the throne of the Japanese emperor?

What original literary work was the movie "The Heiress" based on?

What Shakespeare play is set on January 5?

Which author and philosopher is known for his works The Plague, The Outsider and The Fall?

What author created Narnia?

What is the most common ending for a city, town, village or hamlet in England?

Which state is the Hoover Dam located in?

What California desert boasted the first solar power plant able to store heat, in 1996?

Wallace Carothers invented nylon while working as a scientist for what company?

What is the most popular animal eaten before it's born and after it's dead?

What cartoon character is named for Princess Dala's diamond in a 1963 film?

Who was the fifth president of the United States?

Which Disney film marked Donald Duck's debut?