America’s Billion-Dollar Tree Problem Is Spreading Grasslands are being overrun by drought-resistant invaders that wreck animal habitats, suck up water supplies, and can cost landowners a fortune.

Emergency crews are responding after a tree reportedly fell on a house in Lancaster County following a severe thunderstorm threat in the area.

Carpathian Journal of Mathematics, Vol. 25, No. 1 (2009), pp. 104-118 (15 pages) In this survey paper, we discuss the development of the Generalized Minimum Spanning Tree Problem, denoted by GMSTP, ...

Homeowners in Capron Ridge in Viera are debating how best to deal with large oaks that undermine sidewalks. But tree controversies branch way beyond Brevard County.

In yards, tree of heaven is a nuisance not only because of the ubiquitous seedlings and suckering sprouts, but because the tree’s wood is weak and branches tend to break and fall in storms.

This problem is NP-complete and is also a generalization of the Traveling Salesman Problem. In this paper, we present a branch-and-bound algorithm for the exact solution of the Tree QAP based on an ...

The Senior students used facts and figures on urban sprawl - every minute, two acres in the United States are developed; five million acres in Montana are threatened by development; car accidents ...

Villagers dressed as badgers and bats to protest the “trimming” of a 100-year-old oak tree by developers ... costumes to ...