Wednesday, August 13, 2008

Latest Environmental Crisis: The Tropics Are Shrinking! Greens Blame Bush Administration And 40,000 Year Long Planetary Cycle...But Mostly Bush.


The positions of the Tropic of Cancer, the Tropic of Capricorn, the Arctic Circle and the Antarctic Circle all depend on the tilt of the Earth's axis relative to the plane of its orbit around the sun. As the axis tilts, so do all these lines. So, all the useful Tropic of Capricorn markers around the world (some of which are pictured here) aren't really all that accurate. They can't be.


The Tropic of Cancer line is therefore also unstable, meaning that every year the Tropics decrease in size by about 1100 sq km. The Arctic and Antarctic Circles are also moving towards the Poles, meaning the polar regions are technically shrinking too. This all takes place over a 40,000 year cycle, but what happens at the end of that period isn't clear. Maybe it moves back slowly. I certainly hope it doesn't bounce back suddenly.

3 comments:

Greg said...

What are Henry Miller fans going to do now?

Mike Stajduhar said...

Well for what it's worth both those books are kinda long...and insufficiently dirty to justify the tedium...they could use some paring down.

Dan "Hail to MY Cheif" Gaines said...

raqcfyqtDiff subj - liSTEN, A MILLION COMMEGE KIDS A YEAR COULD HAVE TOLD YOU THIS
http://www.msnbc.msn.com/id/26205250/