The cryosphere is simply the earth regions covered by ice like the poles. NASA takes a tour of the cryosphere in 2009 as they have a look at the extent of the receding ice zones.
Channels: Ecology Geophysics Environmental engineering
Tags: NASA A Tour of the Cryosphere 2009
Uploaded by: second ( Send Message ) on 24-11-2011.
Duration: 5m 12s