Thursday, April 17, 2008

Tree reveals warmer climate 8,500 yrs ago

Link
The world's oldest tree has been found in Sweden, a tenacious spruce that first took root just after the end of the last ice age, more than 9,500 years ago.

The tree has rewritten the history of the climate in the region, revealing that it was much warmer at that time and the ice had disappeared earlier than thought.

Previously, pine trees in North America were thought to be the oldest, at around 5,000 years old.

But Swedish scientists report that in the mountains, from Lapland in the north to Dalarna in central Sweden, there are much more ancient spruce trees (Picea abies).