Glaciers carved the deep valleys of Banff, eroded Ontario to deposit the fertile soils of the Prairies, and continue to change Earth's surface. But how fast do glaciers sculpt the landscape?

Glaciers carved the deep valleys of Banff, eroded Ontario to deposit the fertile soils of the Prairies and continue to change the Earth’s surface. But how fast do glaciers sculpt the landscape?

Researchers want to use the ultrafine rock particles left by eroding glaciers — called “rock flour” — to suck climate-warming carbon from the air.