D-shaped holes in the bark or new tree shoots emerging at the root zone of your ash trees may be a sign of infestation by the Emerald Ash Borer, an insect native to the Far East that targets ash trees, says Dave Dailey of Birchcrest Tree and Landscape, in Rochester, N.

WSJ: Getting to the Roots of Your Trees' Stress

And we hit the notorious bars in the sky: Vertigo, atop the Banyan Tree (banyantree.com), which has D gibbering with health-and-safety-induced anxiety and requires us to neck two vast martinis each to facilitate the walk down the vertiginous steps clinging to the side of the building.

BBC: Postcard from Bangkok

He'd won the book in an Arbor Day poster contest for schoolkids that had coincided with a citywide tree-planting program administered by the Department of Parks and Public Property.

NPR: Roth Rewrites History with a 'Plot Against America'