10. Four years ago, an art historian used lasers to digitally map Notre Dame Cathedral. His work could help save it
From April 23
: Although parts of Paris' Notre Dame Cathedral now lie in ruins, people can still experience what most of its nooks and crannies looked like in remarkable detail — thanks to an American art historian.
Andrew Tallon, a professor of art at Vassar College, used lasers to painstakingly scan the cathedral in 2015, giving us a nearly perfect digital replica of the Gothic structure. And his work could help architects and engineers rebuild it after Monday's fire.
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