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"From these data, the scientists found a 300-year dry period that began about 1,000 years ago, coinciding with a well-known warm episode called the Medieval Climate Anomaly."

Nothing "anomalous" about it, they just don't have the understanding to explain it.

The "anomaly" they are referring to was between 1000 A.D. and 1300 A.D., when average global temperatures were about 3 degrees centigrade WARMER THAN THE AVERAGE TEMPERATURES ARE TODAY. It came on about as suddenly (over about a century) as today's "global warming" trend is doing (and, my goodness, there was not greenhouse-gas emitting SUV's back then either!!!!).

That "3 degrees centigrade" is also about as warm as they say the current "global warming" will achieve.

So, the earth can suddenly have temperatures "3 degrees centigrade warmer than today, on its own, lasting between 1000 A.D. and 1300 A.D, but here in 2007 A.D it can only be man made?????

Talk about arrogance and hubris!!!!

Here's a quick list of some of the tragedies that occurred during that last bout of global warming (1000 - 1400):

First paper money printed in China.
Movable type printing by Bi Sheng in China
Crossbow invented in France.
Magnetic compass invented.
Clothing buttons invented.

The Hindu-Arabic numbering system introduced to the west by Italian mathematician, Fibonacci.

Rodger Bacon invented his gunpowder formula.
Gun invented in China.
Invention of eyeglasses.
Circa 1280 Mechanical clocks invented.
Circa 1285 - 1290 Windmills invented.
Modern glassmaking begins in Italy.
First sawmill.
First mention of a handgun.
Scales for weighing invented

So, the earth can suddenly have temperatures "3 degrees centigrade warmer than today, on its own, lasting between 1000 A.D. and 1300 A.D, but here in 2007 A.D it can only be man made?????

Yes. And if you have a problem with that, you're no better than a Holocaust denier. /sarc