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 ...

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 ...

Trees contain valuable information about Earth's past, so much so that studying their rings may help fill in hidden gaps in Ohio's environmental history.

Trees communicate. They migrate. They protect. They heal. This year for Arbor Day this year we climbed into the NPR archives to find our favorite arboreal fiction, nonfiction and kids' books. Scroll ...

Perhaps you’ve wandered through a forest or strolled into a neighborhood park and found tree trunks — and wondered if counting the rings on a trunk is truly a way to know the tree's age. "Most of us ...

HAMLIN TOWNSHIP, MI – Sugar maple. Red maple. Silver maple. What’s the difference? Those three maple species are part of the “tree identification pathway” at Ludington State Park, near Ludington. This ...