Ancient penguin bones reveal unprecedented shrinkage in key Antarctic glaciers
Thwaites Glacier is losing ice more quickly than at any other time in the last 5,500 years
![Satellite image of an Antarctic glacier shedding ice into Pine Island Bay](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2022/06/060722_DF_pine-melting_feat.jpg?fit=1030%2C580&ssl=1)
Pine Island Glacier in Antarctica, shown in February of 2020 shedding ice into Pine Island Bay, may be retreating at an unprecedented rate.
Nasa Earth Observatory, USGS