Which is the Tallest Mountain in the World?

The answer is simple and does tally with what you learned in your geography lessons - Yes, Mount Everest is indeed, the tallest mountain in the World, but only when measured from the mean sea level. Other than measuring height of structures from the mean sea level, there are two more methods by which we can measure the tallest structure on the planet - (a) measuring the structure from the ocean floor and (b) measuring the structure from the center of the Earth. If measured from the bottom of the ocean, the credit of being the tallest mountain goes to Mauna Kea, a volcanic crater in Hawaii, and if measured from the center of the Earth, the credit goes to Chimborazo, in the Andes mountain range. Let's get more details about each of these candidates.