Take a look at the world's tallest buildings, as ranked by the Council on Tall Buildings and Urban Habitat.
Burj Khalifa, also known as Burj Dubai or Dubai Tower in the United Arab Emirates, is the tallest building in the world at 2,717 feet tall.
Summer means road trips, and it seems everyone has a tip on how to save fuel. But which are fact and which are fiction? Take this quiz to find out.