The United Arab Emirates wants to build a city on Mars

Elon Musk isn't the only person who wants to build a city on Mars. Now the United Arab Emirates has announced that it wants to establish a "mini-city" on the red planet by 2117.  UAE prime minister Sheikh Mohammed bin Rashid Al Maktoum explained the monarchy's Mars plans in a series of tweets on Feb. 14.SEE ALSO: Dubai is bringing the world its first rotating skyscraper"The project, to be named 'Mars 2117,' integrates a vision to create a mini-city and community on Mars involving internatio