Good question. Worry is nothing more than interest paid in advance on a debt that never becomes due.
If the glacier ice breaks off the sheet and floats in to the ocean, it automatically raises the sea level at that moment...When it melts, it only the volume it has already maintained...Sea rise would = ZERO....
Or public policy wonks er I mean scientists making dire predictions that can’t be proven false for 200 years. Good 6 figure work if you can get it.