North Pole, South Pole: The Epic Quest to Solve the Great Mystery of Earth’s Magnetism by Gillian TurnerWhy do compass needles point north—but not quite north? What guides the migration of birds, whales, and fish across the world’s oceans? How is Earth able to sustain life under an onslaught of solar wind and cosmic radiation? For centuries, the world’s great scientists have grappled with these questions, all rooted in the same phenomenon—Earth’s magnetism.
Over 2,000 years after the invention of the compass, Einstein called the source of Earth’s magnetic field one of greatest unsolved mysteries of physics. Here, for the first time, is the complete history of the quest to understand Earth’s magnetism—from the ancient Greeks’ fascination with lodestone, to the geological discovery that the North Pole has not always been in the North—and to the astonishing modern conclusions that finally revealed the true source.
Richly illustrated and skillfully told, North Pole, South Pole unfolds the human story behind the science: that of the inquisitive, persevering, and often dissenting thinkers who unlocked the secrets at our planet’s core.
Which pole is colder?
Radu Tyrsina , Updated June 17, The two poles are at extreme opposites of the planet, and many of their features are also polar opposites. Feel free to mention others in the comments. The arctic area is located in the North Pole region and has a natural melting cycle during which almost half of the ice shelf melts away in summer, only to freeze again in winter and come back to its original size. During winter, the arctic ice shelf has a surface almost equal to that of the US. However, an unsettling study has recently revealed that the 3.
The Arctic has a normal melting cycle in which about half of the ice pack disappears in the summer, only to grow back to the size of the United States during the winter. Still, an alarming recent study determined that the 2-mile-thick ice sheet in Greenland is melting so rapidly that half of it could be gone by the end of the century. Other studies have found that the entire Arctic could be ice-free during summer in a few decades. Lately, research has also found that the Antarctic is also losing ice , which if all melted no one expects this to happen anytime soon , would cause sea levels to rise roughly feet. Being primarily a thin layer of ice, the arctic is very sensitive to changing climate conditions.
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Compare the Poles. Even though they are both at the "ends of the earth," the Arctic and Antarctic differ in many ways. - After all, Santa can't afford to be late on Christmas Day. By Robert Matthews.
Say "North Pole" and most people think of Santa, but did you know that the region is a hotbed for international intrigue? Or that it has a special connection to the unicorn? Just in time for Christmas, here are 10 fun facts about the most mythical place on earth. There's more to the North Pole than just snow and Santa. Ever since it was discovered by Robert E. Peary, Matthew Henson, and four Eskimo companions back in , the North Pole has been a place of international intrigue — did you know several countries are now fighting over vast underground oil reserves in the Arctic Circle?
The North Pole , also known as the Geographic North Pole or Terrestrial North Pole , is subject to the caveats explained below defined as the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface. At the North Pole all directions point south; all lines of longitude converge there, so its longitude can be defined as any degree value. Along tight latitude circles, counterclockwise is east and clockwise is west. The North Pole is at the center of the Northern Hemisphere. While the South Pole lies on a continental land mass , the North Pole is located in the middle of the Arctic Ocean amid waters that are almost permanently covered with constantly shifting sea ice.