and the tree dies. Infested trees showed sharp drops in diameter as they began to dry out. The European spruce bark beetle (Ips typographus) is a bark beetle that primarily causes damage to spruce ...

The melting of glaciers in the Rocky Mountains led to a remarkable discovery: a 5,900-year-old whitebark pine forest ... is 180 meters above the current tree line. The tree line, also known ...

And as a tree matures, so does the character of its bark, useful knowledge that can help gauge how old a tree might be. Seeing a 150-year-old tree is impressive on its own, made all the more ...