Geoengineering won't save our glaciers.
Here's why.

As the cryosphere continues to deteriorate a growing chorus of voices is turning to geoengineering as a solution. Researchers have floated everything from giant underwater curtains to block warm water from reaching glaciers, to drilling holes to drain water from beneath ice sheets, to spraying reflective aerosols into the stratosphere.

Take the seabed curtain concept, proposed to slow glaciers like Thwaites in Antarctica. Diverting warm water from one glacier might simply accelerate melting elsewhere. And a case study for Greenland's largest marine-terminating glacier found that artificial barriers would likely harm marine productivity, with serious consequences for local fisheries that must be weighed alongside any technical questions.