Currently, Asia is Earth's largest continent at approximately 17,300,000 square miles (44,806,812 sq km). Africa comes in second at about 11,700,000 square miles (30,300,000 sq km). However, Continental Drift Theory suggests that the continents have moved over the years through the process of plate tectonics. Many geologists believe that, during the Mesozoic era, all of the continents combined to form a supercontinent known as Pangaea which would have dwarfed the largest continent today. It is believed that Pangaea began to break up about 200 million years ago.
The Sargasso Sea is a region in the middle of the North Atlantic Ocean. Surrounded by ocean currents, it is the only sea on Earth which has no coastline. It is bounded on the west by the Gulf Stream; on the north, by the North Atlantic Current; on the east, by the Canary Current; and on the south, by the North Atlantic Equatorial Current.
Kangaroo Island is one of Australia's biggest tourist attractions. Located 70 miles (110 km) southwest of Adelaide, it is the second largest of the southern Australian system of islands after Tasmania. Tens of thousands of people visit Kangaroo Island each year, drawn by its natural wonders, beaches, conservation parks and wildlife sanctuaries. The island is also known for its fine wines.
Antarctica is located at 90° S Longitude 0.00° E. Not considered a continent until 1840, Antarctica is the coldest and windiest place on earth. On average, winter temperatures range from -40° to -94°F, and it is not uncommon for winds to be clocked at 200 miles per hour. If you're going for a visit, you might want to bring your parka!
Brazil is the largest and most populous country in South America. It is so large, in fact, that it borders every South American country except for Ecuador and Chile. Brazil covers nearly half of South America and is larger in area than the continental United States of America.
At 8,850 meters (29,035 ft), Mount Everest is the tallest mountain in the world. In Nepali, Everest is called Sagarmatha or "Forehead of the Sky" and in Tibetan it is known as Qomolangma or "Mother of the Universe". In 1953, Sir Edmund Hillary and Tenzing Norgay became the first climbers to reach the summit of Mount Everest and return to tell about it. However, 29 years earlier, George Mallory and Andrew Irvine, two British climbers, had set out to accomplish the same feat. Although they died at some point on their journey, Noel Odell, the expedition's geologist, witnessed the duo climbing not far from the summit at 12:50 pm on June 8, 1924. In 1999, Mallory's body was discovered just below the Second Step. The general consensus among climbers has been that the pair never reached the summit, and there is no evidence of either man above the Second Step, but if Mallory made it that far he likely summited as there are no technically difficult climbs beyond that point. Interestingly, although Mount Everest is the hightest mountain in the world as measured from sea level, the dormant volcano Mauna Kea on the Big Island in Hawaii could be considered to own that distinction. If measured from its base in the Hawaiian Trough 3,280 fathoms below the surface of the ocean, Mauna Kea's summit could be considered to be 33,476 feet, beating Mount Everest by 4,441 feet!