NPR logo

Will a Layer of Silt in the Sky Save the Earth?

  • Download
  • <iframe src="https://www.npr.org/player/embed/6076777/6076778" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript
Will a Layer of Silt in the Sky Save the Earth?

Environment

Will a Layer of Silt in the Sky Save the Earth?

Will a Layer of Silt in the Sky Save the Earth?

  • Download
  • <iframe src="https://www.npr.org/player/embed/6076777/6076778" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">
  • Transcript

A researcher says he has a way to "Save the Earth from Global Warming" — for a while, at least. The idea is to do what volcanoes do: inject material into the stratosphere. That would create a thin haze and reflect some sunlight. The general notion has been around for decades.

But the paper proposes using it not as a permanent fix, but to buy time until greenhouse gases emissions can be brought under control. The proposal appears in the journal Science this week.