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Populus tremuloides is a deciduous tree native to cooler areas of North America, one of several species referred to by the common name aspen.It is commonly called quaking aspen, [2] [3] [4] trembling aspen, [2] [3] American aspen, [3] mountain or golden aspen, [5] trembling poplar, [5] white poplar, [5] and popple, [5] as well as others. [5]
They are all medium-sized deciduous trees reaching 15–30 m (50–100 ft) tall. In North America, the aspen is referred to as quaking aspen or trembling aspen because the leaves "quake" or tremble in the wind. This is due to their flattened petioles which reduce aerodynamic drag on the trunk and branches. Aspen trees near Crested Butte, Colorado
Aerial view of the debris field of the North Tower, 6 WTC, and 7 WTC (upper right). The damaged Verizon Building can be seen left of WTC 7's ruins.. Some conspiracy theories contend that the collapse of the World Trade Center was caused not solely by the airliner crash damage that occurred as part of the September 11 attacks and the resulting fire damage but also by explosives installed in the ...
Take a look back at 19 basic facts about the Pentagon, Flight 93 and World Trade Center attacks. As a warning: Some of the content may be triggering. 9/11 Facts: The Basics
Back at our building, my son and I took the elevator up to the roof deck on the 15th floor. I parked the stroller and carried him outside, where we got our first look at the World Trade Center’s ...
The land is flat, with the foot of one of the ridges of Aspen Mountain just beyond West Hyman Avenue to the south. Many mature trees shade the houses in the neighborhood. [4] The building itself is a one-story structure built of rectangular hand-hewn logs [2] stained a dark brown with mortar in between. At the joints the logs interlock.
At 1,776 feet tall, One World Trade Center is the tallest building in the Western Hemisphere. For fourth-generation ironworker, Tom Hickey, One World Trade Center consumed his life. He is one of ...
One World Trade Center (WTC 1), the "North Tower", was, at 1,368 ft (417 m), six feet taller than Two World Trade Center (WTC 2), the "South Tower", which was 1,362 ft (415 m) tall. Numerous closely spaced perimeter columns provided much of the structural strength, along with gravity load shared with the steel box columns of the core. [23]