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Earth Wobbles linked to extinctions! LONDON, England (Reuters) -- Wobbles or variations in the Earth's orbit and tilt are associated with extinctions of rodent and mammalian species, Dutch scientists said on Wednesday. They studied rodent fossil records in central Spain dating back 22
million years and found that the rise and fall of mammal species was linked to changes in the Earth's behavior which caused cooling periods. "Extinctions in rodent species occur in pulses which are spaced by intervals controlled by astronomical variations and their effects on climate change," Dr Jan van Dam, of the Utrecht University in the Netherlands, said. The researchers found two cycles corresponding to the disappearance of rodent species. One lasts 2.4 million years and is linked to variations in the Earth's orbit. The other is a 1.2 million year cycle relating to shifts in the tilt on the Earth on its axis.   Details...

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Magnet Pole Drifting The Earth's north magnetic pole is drifting away from North America so fast that it could end up in Siberia within 50 years, scientists have said. The shift could mean that Alaska will lose its northern lights, or auroras, which might then be more visible in areas of Siberia and Europe. The magnetic poles are different from geographic poles, the surface points marking the axis of Earth's rotation. Magnetic poles are known to migrate and, occasionally, swap places.
"This may be part of a normal oscillation and it will eventually migrate back toward Canada," Joseph Stoner, a palaeomagnetist at Oregon State University, told a meeting of the American Geophysical Union (AGU) in San Francisco. Wandering poles Previous studies have shown that the strength of the Earth's magnetic shield has decreased 10% over the past 150 years. During the same period, the north magnetic pole wandered about 1,100km (685 miles) into the Arctic, according to the new analysis. The rate of the magnetic pole's movement has increased in the last century compared with fairly steady movement in the previous four centuries, the Oregon researchers said. The Oregon team examined the sediment record from several Arctic lakes. Since the sediments record the Earth's magnetic field at the time, scientists used carbon dating to track changes in the magnetic field. They found that the north magnetic field shifted significantly in the last thousand years. It generally migrated between northern Canada and Siberia, but has occasionally moved in other directions. Rate of change At the present rate, the north magnetic pole could swing out of northern Canada into Siberia. If that happens, Alaska could lose its northern lights, or auroras, which occur when charged particles streaming away from the Sun collide with gases in the ionosphere, causing them to glow. The north magnetic pole was first discovered in 1831 and when it was revisited in 1904, explorers found it had moved by 50km (31 miles). For centuries, navigators using compasses had to learn to deal with the difference between magnetic and geographic north. A compass needle points to the north magnetic pole, not the geographic North Pole. 2012, Mayan Calender, Mayan Calendar, Pole Shift, Pole Reversal,   Details...

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Earth Wobbles linked to extinctions! E-mail
Written by Administrator   
Wednesday, 11 October 2006
LONDON, England (Reuters) -- Wobbles or variations in the Earth's orbit and tilt are associated with extinctions of rodent and mammalian species, Dutch scientists said on Wednesday. They studied rodent fossil records in central Spain dating back 22Image million years and found that the rise and fall of mammal species was linked to changes in the Earth's behavior which caused cooling periods. "Extinctions in rodent species occur in pulses which are spaced by intervals controlled by astronomical variations and their effects on climate change," Dr Jan van Dam, of the Utrecht University in the Netherlands, said. The researchers found two cycles corresponding to the disappearance of rodent species. One lasts 2.4 million years and is linked to variations in the Earth's orbit. The other is a 1.2 million year cycle relating to shifts in the tilt on the Earth on its axis. The cycles are associated with lower temperatures, changes in precipitation, habitats, vegetation and food availability which are the main factors influencing the extinction peaks, the study published in the journal Nature said. "Rodents are very sensitive to seasonal changes because they have such a short lifespan," said Van Dam, adding that they represent one of the best mammal fossil records. At the moment, the Earth is at the beginning of a cycle but the planet's climate system has changed so much in the past 3 million years that it is difficult to predict what will happen in the future. "The environment is responsible to what happens to species," said Van Dam. "Biological factors are secondary, according to our results." Copyright 2006 Reuters. All rights reserved.This material may not be published, broadcast, rewritten, or redistributed.
Comments (3)Add Comment
Current Venus Location
written by Wayne, June 05, 2008
Does anyone know why Venus has changed its location from its previous northernly location to its current easternly-southernly location during the past 6 months or so?
Could it be that that Earth is ‘flipping’ faster than previously thought?
Has anyone else noticed this?
And why all the hush-up in the news media? Something is going on up there.
Any thoughts on this?
...
written by Steph, June 14, 2008
Have to agree with you, actually whats more interesting is the increase in volcano eruptions, and earthquakes and barely it being mentioned on the news. Funny how 10-15 years ago if a volcano even started smoking anywhere in the globe every new station is there trying to cover it, now its hardly mentioned meanwhile the space between these situations seem to be every 3 weeks theres something going on, to me this is obviously a linkage with the pole shifts. I wonder where the best place to be is?
...
written by Patrick, June 25, 2008
which way will the world tilt?

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