English: This drill was used as part of the WAIS Divide ice core project to collect an ice core that contained a record of how and why climate changed in the past. The ice core that extends out of the drill was collected from a depth of about 2 km and is clear because all the atmospheric air trapped in the ice has been pushed in to clathrates by the pressure of the ice above it.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.