The basis of the science lies in a tree's unique pattern of growth rings, which acts as a kind of fingerprint. Every year a new ring is added to a tree's trunk and branches, just beneath the bark.

Quebec tree rings dating back nearly 200 years indicate snowpack in the Gaspésie mountains has declined considerably in ...

(See Create a DNA Fingerprint.) Every year a new ring of growth is added to a tree's trunk and branches, just beneath the bark. The thickness of this ring depends on how much the tree grows during ...

A study of tree rings in the Gaspesie's Sainte-Anne River area reveals that snowpacks have been declining noticeably in the ...

A study of tree rings in the Gaspésie’s Sainte-Anne River area reveals that snowpacks have been declining noticeably in the ...