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New York City's Hidden Old-Growth Forests Tree-Ring Scientists Are Salvaging Centuries of Climate and Historical Data From Demolished Structures Tree-ring scientists from Columbia University’s Lamont-Doherty Earth Observatory are extracting climate and historical information from timbers salvaged out of old New York City buildings. Here, joists are carted away from the 2018 demolition of a circa 1890s warehouse in Manhattan’s Tribeca neighborhood. (Alan Solomon) In the popular imagination, New York City is a mass of soaring steel-frame skyscrapers. But many of the city’s 1 million buil...

A Cornell University team led by Sturt Manning, Distinguished Professor of Arts and Sciences in Classics and director of the Tree-Ring Laboratory, used dendrochronology and a form of radiocarbon dating called 'wiggle-matching' to pinpoint, with 95% probability, the years in which an ancient wooden structure's two main components were created: a lower tank in 1444 B.C., and an upper tank in 1432 B.C. Each date has a margin of error of four years.

The Noceto Vasca Votiva is a unique wood structure that was unearthed on a small hill in northern Italy in 2005. Built primarily of oak and slightly...