A similar lesson emerges from a remarkable piece of environmental art made the night of September 10, when the artist Monika Bravo filmed a giant thunderstorm that rolled through New York City from the 91st floor of the North Tower. As part of a creative-residency program, she had studio space in the building, and her video shows the storm sweeping south from New Jersey into the city as day turns to night. It is the last visual record of nighttime from within the World Trade Center. Bravo happened to take the raw video home that night, and later turned it into a work of art called September
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