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http://nytimes.com/revkinHudson Valley, NY, USA
There's long been a general picture of the climate of the Holocene, the period of Earth history since the last ice age ended around 12,000 years ago. It goes like this: After a sharp stuttery warm-up following that big chill - to temperatures warmer than today - the climate cools, with the decline reaching bottom around 200 years ago in the period widely called the "little ice age."