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Tracking a Jurassic reversal of the Earth's magnetic field

Roughly 180 million years ago, during the height of the Jurassic period, the Earth's magnetic field flipped, bringing the magnetic north pole once again into the Northern Hemisphere.

Space & Earth / Earth Sciences

created May 17, 2012 | popularity 4.5 / 5 (2) | comments 0

Dinosaur forests mapped

The first detailed maps of the Earth's forests at the time of the dinosaurs have been drawn up. The patterns of vegetation, together with information about the rate of tree growth, support the idea that the ...

Space & Earth / Earth Sciences

created Feb 28, 2012 | popularity 4.6 / 5 (5) | comments 7 | with audio podcast

Europe hammered by winter, is North America next?

For the first half of this year's winter, the big news was warm temperatures and lack of snow. Ski resorts were covered in bare dirt, while January temperatures in southern California topped July highs.

Space & Earth / Earth Sciences

created Feb 17, 2012 | popularity 4 / 5 (4) | comments 14

STAR TRAK for February 2012

As evening twilight fades during February, the two brightest planets, Venus and Jupiter, will highlight the sky as they come into view in the southwest.

Space & Earth / Space Exploration

created Feb 02, 2012 | popularity 5 / 5 (1) | comments 0

Low temperatures enhance ozone degradation above the Arctic

Extraordinarily cold temperatures in the winter of 2010/2011 caused the most massive destruction of the ozone layer above the Arctic so far: The mechanisms leading to the first ozone hole above the North Pole ...

Space & Earth / Earth Sciences

created Jan 19, 2012 | popularity 5 / 5 (2) | comments 1

Denmark names first Arctic envoy

Denmark, which is planning to lay a claim to the North Pole sea bed, on Tuesday named its first permanent envoy to the resource-rich Arctic.

Space & Earth / Earth Sciences

created Jan 17, 2012 | popularity 4 / 5 (1) | comments 1

MARSIS completes measurement campaign over Martian North Pole

(PhysOrg.com) -- The Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) instrument on board Mars Express has recently completed a subsurface sounding campaign over the planet's North Pole. ...

Space & Earth / Space Exploration

created Dec 20, 2011 | popularity 2 / 5 (2) | comments 3

A new home for Santa Claus?

(PhysOrg.com) -- After the many years of commuting on Christmas Eve, jolly old St. Nicholas is reconsidering his home at the North Pole. Given his job description, extreme isolation has lost its appeal. In ...

Other Sciences / Other

created Dec 16, 2011 | popularity not rated yet | comments 3

Epic race to South Pole remembered on 100th anniversary

One hundred years ago Norwegian explorer Roald Amundsen won the race to the South Pole in a dramatic and ultimately fatal duel with British adventurer Robert Scott that captured the world's attention.

Space & Earth / Earth Sciences

created Dec 14, 2011 | popularity 4.5 / 5 (2) | comments 0

How Arctic microbes respond to a warming world

From the North Pole to the Arctic Ocean, the frozen soils within this region keep an estimated 1,672 billion metric tons of carbon out of the Earth's atmosphere. This sequestered carbon is more than 250 times ...

Biology / Cell & Microbiology

created Nov 06, 2011 | popularity 4.8 / 5 (6) | comments 1 | with audio podcast

Space image: The Moon's North pole

(PhysOrg.com) -- The Earth's moon has been an endless source of fascination for humanity for thousands of years. When at last Apollo 11 landed on the moon's surface in 1969, the crew found a desolate, lifeless ...

Space & Earth / Space Exploration

created Sep 08, 2011 | popularity 5 / 5 (5) | comments 4

Da Vinci sketch recreated on melting Arctic ice

An artist has recreated Leonardo da Vinci's most famous sketch "Vitruvian Man" in the Arctic ice to draw attention to the ice melt, Greenpeace said Wednesday.

Space & Earth / Environment

created Sep 07, 2011 | popularity 5 / 5 (1) | comments 3

Research vessel Polarstern at North Pole

You can't get any "higher": on 22 August 2011 at exactly 9.42 a.m. the research icebreaker Polarstern of the Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association reaches the ...

Space & Earth / Earth Sciences

created Aug 23, 2011 | popularity not rated yet | comments 0

Denmark moves forward on North Pole claim

Denmark on Monday presented its "Arctic Strategy" for the next decade, confirming that it intends to lay claim to the North Pole sea bed by 2014 at the latest.

Space & Earth / Earth Sciences

created Aug 22, 2011 | popularity 5 / 5 (6) | comments 10

Mars' northern polar regions in transition

A newly released image from ESA's Mars Express shows the north pole of Mars during the red planet's summer solstice. All the carbon dioxide ice has gone, leaving just a bright cap of water ice.

Space & Earth / Space Exploration

created Aug 05, 2011 | popularity 4.5 / 5 (8) | comments 0

North Pole

Coordinates: 90°N 0°W / 90°N 0°W / 90; -0

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 the Earth's surface. It should not be confused with the North Magnetic Pole.

The North Pole is the northernmost point on Earth, lying diametrically opposite the South Pole. It defines geodetic latitude 90° North, as well as the direction of True North. At the North Pole all directions point south; all lines of longitude converge there, so its longitude can be defined as any degree value.

While the South Pole lies on a continental land mass, the North Pole is located in the middle of the Arctic Ocean amidst waters that are almost permanently covered with constantly shifting sea ice. This makes it impractical to construct a permanent station at the North Pole (unlike the South Pole). However, the Soviet Union, and later Russia, have constructed a number of manned drifting stations, some of which have passed over or very close to the Pole. Recently, scientists have predicted that the North Pole may become seasonally ice-free by 2065 due to Arctic shrinkage. More pessimistically, it was claimed by some scientists that the Arctic ice-cap might temporarily disappear in mid 2008, a prediction which did not come to pass. On December 15, 2008, the Canadian science TV series Daily Planet reported that scientists now predict the ice cap could melt away by 2014.

The sea depth at the North Pole has been measured at 4,261 metres (13,980 ft). The nearest land is usually said to be Kaffeklubben Island, off the northern coast of Greenland about 700 km (440 mi) away, though some perhaps non-permanent gravel banks lie slightly further north.

For more information about North Pole, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.

Related topics: climate change , arctic