Can $500 Million Save This Glacier?

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https://www.nytimes.com/2024/01/06/magazine/glacier-engineering-sea-level-rise.html

By on Gertner, The New York Times. 

Excerpt: ...a glacier on Greenland’s west coast...referred to by its Danish name, Jakobshavn...situated on the edge of Greenland’s massive ice sheet, that moves 30 billion to 50 billion tons of icebergs off the island every year. ...Glaciologists have identified it as one of the fastest-deteriorating glaciers in the world. ...Jakobshavn alone was responsible for 4 percent of the rise in global sea levels during the 20th century. It probably contains enough ice to ultimately push sea levels up at least another foot. ...at the bottom of the bay’s entrance...the warm water flows over a sill, a ridge rising several hundred feet above the ocean floor ...akin to a threshold that crosses the floor of a doorway between two rooms. [British glaciologist John Moore] and his colleague Michael Wolovick published an article that proposed looking into building a sea wall 100 meters high...on the floor of Disko Bay. Raising the sill, using gravel and sand, could reduce the warm water in the fiord and allow Jakobshavn to thicken naturally and stabilize. ...If the idea proved workable in the Arctic, it could be translated to Antarctica, where much larger glaciers in the Amundsen Sea, especially one known as Thwaites, threaten to raise sea levels substantially. ...geoengineering seeks to reduce the impacts of climate change and to buy us more time as we transition to a zero-carbon world. ...A number of glaciologists...view Moore’s idea for protecting glaciers as technically or ethically problematic. ...geoengineering, in general terms...only addresses — at best — some of its impacts. Of more direct concern...seabed curtains in the Arctic might affect ecosystems and fisheries.... For

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