During the ice ages, the planet was a lot dustier, and the wind-swept plains of Patagonia may have provided much of the dust that we now find in Antarctica. From where exactly did that dust originate? Could it have influenced climate? And did it help trigger past ice ages? A team of scientists recently spent 10 days collecting dust in Patagonia to find out. Alejandra Borunda, a student in Columbia’s Earth and Environmental Science Journalism program, kept this blog during her travels and is now working with scientists Gisela Winckler and Michael Kaplan of Lamont-Doherty Earth Observatory to analyze their samples.
Updated: 11 min 23 sec ago