Can geoengineering plans save glaciers and slow sea level rise?

Controversial plans to curb the melting of some West Antarctic glaciers pose big challenges

A boat heads toward Pine Island Glacier in Antarctica.

West Antarctica’s Pine Island (shown) and Thwaites glaciers together hemorrhage 140 cubic kilometers of ice per year, through melting and the shedding of icebergs. These glaciers are targets of glacial engineering proposals.

Mike Single

Only four ships have ever visited the place where Thwaites Glacier pours off the coast of West Antarctica.