Africa is known as the "Dark Continent" because it was unexplored for a long time. The term was coined by Welsh journalist and explorer Henry Morton Stanley in his 1878 travelogue. Stanley considered Africa to be mysterious and poorly known. 

Thimphu or Thimphu is the capital and largest city of the mountain nation of Bhutan.

South Atlantic Drift: Also known as the Westerlies Drift, it is the eastward continuation of the Brazil current.

The Pacific Ocean is almost triangular in shape. It's not perfectly round, but it appears circular when viewed on maps and globes. The Pacific Ocean's apex is in the north at the Bering Strait.