Originally published on Tue October 15, 2013 5:19 am
Two explorers have discovered more than a mile of caves underneath a glacier on Mt. Hood near Portland, Oregon. They suspect the beautiful formations account for a significant loss of the glacier's ice, and they have set out to measure how much the inside of the glacier is melting each year. It's dangerous work, but it could reveal that some glaciers in the Pacific Northwest are retreating faster than anyone realized.
Astronomy buffs in the western U.S. were treated to an eclipse known as the Ring of Fire over the weekend. Technically, it's an annular solar eclipse, during which time the moon passes between the earth and sun. The moon blocks out much of the sun's light and casts a giant shadow on the earth.