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“Over the past 30 years, ice loss from Thwaites and its neighbouring glaciers has increased more than fivefold, accounting for more than 4% of global sea-level rise. If the glacier collapses completely, it would add another 25in (65cm).” theguardian.com/environment/2020/sep/09/cavities-threaten-glacier-great-britain-thwaites?CMP=Share_iOSApp_Other