Time is ticking down for a giant sequoia that has towered over Seattle for a century or more.The massive tree is slated to be cut down as soon as next week, an ...

The stalactites and stalagmites of Sequoia National Park’s Crystal Cave, a sprawling subterranean wonder that’s been closed ...

Arborists are turning vacant land on Detroit's eastside into a small urban forest, not of elms, oaks and red maples ...