The next time you see a tree stump take a closer look at its rings. Every year most trees produce a light-coloured ring of spring growth and a dark-coloured ring of summer growth. If you count only one ring not both rings, you will be able to tell how old the tree was when it was cut down.
GF Research
GF Scientists from 29 different universities are working all around the world. They are discovering the secrets of the world's wild forests. There is awesome information in these pages on old growth forests, grizzly bears, Japanese macaques, fish and much, much more! We have 10 cool Program Areas to choose from to satisfy all your nature questions.