I read this on the link as follows
Planet Earth ?
Magnetic North Pole Shifts, Forces Runway Closures at Florida Airport
http://www.foxnews.com/scitech/2011/01/06/magnetic-north-pole-shifts-forces-closure-florida-airport/?test=latestnews
Question arise in is that
Q: the Does commitee of adjustmentment should review and consider this vivid nature of earth?
in toronto or any where on the earth if we have to adjust the runways, and if earths pole and maps moves every year around 40 meters! does that mean- none of the civil arrangements are not non changeable.and also apply this for line fence act cases
By Jeremy A. Kaplan | Published January 06, 2011 | | FoxNews.com
Gary A. Glatzmaier / UCSC
A computer simulation

shows the Earth’s magnetic field lines and two poles, with blue lines directed inward and yellow lines directed outward.
The planet’s northern magnetic pole is drifting slowly but steadily towards Russia — and it’s throwing off planes in Florida.
Tampa International Airport was forced to readjust its runways Thursday to account

for the movement of the Earth’s magnetic fields, information that pilots rely upon to navigate planes. Thanks to the fluctuations in the force, the airport has closed its primary runway until Jan. 13 to change taxiway signs to account for the shift, the Federal Aviation Administration said.
The poles are generated by movements within the Earth’s inner and outer cores, though the exact process isn’t exactly understood. They’re also constantly in flux, moving a few degrees every year, but the changes are almost never of such a magnitude that runways require adjusting, said Paul Takemoto, a spokesman for the FAA.
The magnetic fields vary from place to place. Adjustments are needed now at airports in Tampa, but they aren’t immediately required at all airports across the country.
____________http://www.toronto.ca/planning/comm_adj.htm_______________
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