Dirty Glaciers All Over the World

Dirty Glaciers All Over the World

Adding dirt to ice makes it darker, which can help it absorb more sunlight. About one-quarter inch of rocks on top of glacier ice acts like a black tarp, melting the glacier faster. If the rock coating is thicker, which is often the case, it acts as insulation.

Jabbing Sensors into the Denali Fault

Jabbing Sensors into the Denali Fault

The Denali Fault is a weak spot in Earth’s crust that has maintained a frown across the middle of Alaska with its continual jerky movement. Ten scientists are performing fieldwork here, where they are driving 400 seismometers into frozen soil.