Page last updated at 18:01 GMT, Thursday, 17 April 2008 19:01 UK A tree said to be the oldest on the planet - thought to be nearly 10,000 years old - has been found in Sweden. Scientists from Umeaa University discovered the spruce on Fulu Mountain in Dalarna province while carrying out a census of tree species there in 2004. The age of its genetic material was recently calculated using carbon dati