In the world of tree climbing (yes, there is one), no trees are created equal. Each different type offers a different challenge. "If you're a climber, you can climb on granite, sandstone, ice or snow, ...

Vertical Voyages takes students upward to sleep in the trees at John Burroughs School. Sometimes, Jon Richard says, he’ll be up in the canopy of a large Missouri tree, doing work of some kind, and ...