Greenland's Glaciers Melting Faster Than Predicted Due to Tidal Surprises.

A new study has found that the grounding line of glaciers in northern Greenland and Antarctica is less stable than previously thought, leading to a greater rate of melting than previously estimated due to global warming. The study suggests that if these dynamics were included in models, projections of sea level rise could increase by up to 200%. The Greenland ice sheet has already contributed billions of tons of water to the oceans, and the melting of these glaciers could put 1 in 10 people at direct risk from rising sea levels.