As the speed of a body approaches the speed of light, its mass approaches what?

More Questions:

From what language is English has said to borrow the word "posh"?

Which artist's garden attracts tourists to Giverny in France?

On which harbour is the Sydney Opera House located?

Pretoria is the capital of which country?

What Briton with an American wife was the governor of the Bahamas during World War II?

What fruit comes in the Muscat or Scuppernong variety?

What is a male beaver called?

How many Academy Award nominations did Leonardo DiCaprio receive before finally winning the award for Best Actor in 2016?

What vehicle was driven by Humbert Humbert?

What year was Boy George born in?

What show begins with the line "In a time of ancient gods, warlords and kings..."?

Who was the French President from 1969 until his death in 1974?

Off of which European coastline was the "Battle of Trafalgar" fought?

What distiller and entrepreneur founded the town of Walkerville, which is now a heritage neighborhood of Windsor, Ontario in Canada?

Which country owns Easter Island?