
A study published in Nature Geoscience this week shows that warm, salty water has been quietly intruding beneath the West Antarctic Ice Sheet through a previously unmapped network of submarine troughs, melting the ice from below at rates models did not anticipate. The lead author warns that current sea-level forecasts for 2100 may be too conservative by 15 to 25 centimeters.

Science · May 11 · L1-L4