7 Feb 2011

Our Changing World for 7 February 2011 - Sea ice crystals

From Jesse Mulligan, 1–4pm, 3:36 pm on 7 February 2011

For most people, just being in Antarctica sounds a cold proposition. But Alison Ballance is with University of Otago physicist Pat Langhorne to discuss a special kind of sea ice, and she's invited into a 'supercold' freezer.