When you admire a towering oak or a vibrant maple in your backyard, you're only seeing half the picture. Beneath the surface lies a sprawling, intricate world that is arguably more fascinating than ...

Trees come in at least 60,000 varieties. The tallest known tree on Earth is a coast redwood (Sequoia sempervirens) that towers 379.1 feet above the forest floor in Northern California. Over their some ...

Add Yahoo as a preferred source to see more of our stories on Google. The holidays are officially here, which means many will be propping a real or fake Christmas tree up in the home. That is, if they ...

Therapists might agree that an all-out, no-holds-barred blind pursuit of perfection might be considered unhealthy. Except in the pursuit of the perfect Christmas tree. Then it's OK. Most of us have ...

Palo Alto loves trees — it has about 66,000 of them, about one per resident. Our city is responsible for the upkeep of about 46,000 trees in parks and public areas; almost 38,000 of them are street ...

Fir and spruce needles are attached to twigs one by one, while pines grow needles in bunches. Fir tree needles are soft and flat, while spruce needles are stiff and angular. Check out the best types ...

Celebrate Cherry Trees in Washington D.C. Every year, more than 1.5 million people visit Washington, D.C., for the National Cherry Blossom Festival in mid-March through early April when the trees are ...

CRESTED BUTTE, Colo. — Aspen trees are the celebrities of a Colorado fall day. Think about it. People line the roads to take pictures with them. Instagram feeds from all over the state feature ...