Skip to comments.
Global Warming: Medieval Era Hotter than Today
The London Telegraph ^
| 06/04/2003)
| Robert Matthews
Posted on 04/06/2003 11:04:51 AM PDT by Francohio
click here to read article
Navigation: use the links below to view more comments.
first previous 1-20, 21-40, 41-60, 61-64 last
To: Francohio
61
posted on
04/18/2006 9:07:14 AM PDT
by
Dead Corpse
(I believe that all government is evil, and that trying to improve it is largely a waste of time.)
To: jocon307
the tree rings are almost exactly the same thickness in the same years. In other words, after crosscutting a tree that has been dead for 400 years, but was 500 years old, you can line up the thickness of the individual rings to match the rings on a tree that died 700 years ago, and was 300 years old in a different country because the climate that created the thickness of the individual ring also has a match in the other tree in the other country. The tree rings tie together an endless chronological map of what the world was doing at any given time. There are some variances, depending where you're looking at the rings, but there are telltale rings that are mutually consistent no matter where you are looking at them from that allow the aligning of the rings within the different trees. The same hold true for ice cores. They're done the same way. for instance, if a meteor struck in one certain year, you could align the ice cores to that strike and go from there. Pollen differences one year compared to another, etc.
62
posted on
04/20/2006 6:04:32 AM PDT
by
DavemeisterP
(It's never too late to be what you might have been....George Elliot)
To: DavemeisterP
Thanks dave, and I really like your tagline, very inspiring. I'm glad you responded to my old post today.
63
posted on
04/20/2006 6:07:11 PM PDT
by
jocon307
(The Silent Majority - silent no longer)
64
posted on
03/18/2008 10:49:35 PM PDT
by
SunkenCiv
(https://secure.freerepublic.com/donate/______________________Profile updated Saturday, March 1, 2008)
Navigation: use the links below to view more comments.
first previous 1-20, 21-40, 41-60, 61-64 last
Disclaimer:
Opinions posted on Free Republic are those of the individual
posters and do not necessarily represent the opinion of Free Republic or its
management. All materials posted herein are protected by copyright law and the
exemption for fair use of copyrighted works.
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson