Add Yahoo as a preferred source to see more of our stories on Google. In the Ancient Bristlecone Pine Forest, where some of the the world's oldest trees live, scientists are concerned about a possible ...

The seasons are changing from fall to winter, and one of the major changes to the environment is that the deciduous trees have lost their leaves. Evergreen trees may still have green needles, but all ...

The most common causes of death for newly planted trees are drowning and planting too deep, but the third most common hazard is bark borer beetles and their larvae, borer worms. These three problems ...

BISHOP, Calif. — Forest pathologist Martin MacKenzie strode forward on a narrow path through California’s mythic bristlecone pine forest in the White Mountains near the Nevada border, methodically ...