- Photo owner: iSGTW
- Date Taken: July 6, 2009 - 2:37pm
- Date Uploaded: October 23, 2009 - 10:50am
- Views: 176
iSGTW story | Image courtesy
UCAR.
Polarized light reveals the state of the atmosphere thousands of years ago, in a slice of glacial ice containing bubbles of atmospheric gases trapped eons ago.