a pine tree in california was thought to be the oldest tree in the world. People thought it was Nearly 5000 years old,but they couldn't be sure Then someone cut the tree dowe witha chain saw Killing 6he oldest tree in 6he world was w silly thing to do. But when the was cut down,everyone knew its asg.lt was 4900 years old.How can you tell the aye of a tree? lf you eversee a tree thathas just been cut down,take a look at the cut part.you will see rings.there are little rings 9n 6he midd