Among many other benefits, planting trees around your home really can save energy, according to the National Forest Service. The NFS said shade from two 25-foot tall trees on the west side of the ...

FLAGSTAFF, AZ — The electric blue sky frames a stand of ponderosa pines – their ramrod trunks picket the forest floor as sunlight floods the ground. A breeze tickles the green needles, mingling dust ...

FLAGSTAFF — As flurries started to descend on the forest floor, a team of researchers examined a stand of sickly quaking aspen trees off U.S. Highway 180, just north of Flagstaff. To an untrained eye, ...