Sheepdogs, penguins and Antarctic ice

OK, these items just rolled in. However, the use of dogs to protect sensitive eco environs seems to me to be brilliant.
How do you protect penguins against foxes?

Are you also confused about ice-shelf sea ice terminology?
Banff's glaciers brought this to mind.

How would you like to pack for the end of the world?
This question has potentially several meanings. (And then several answers.)