Dear friends,

Even this won't wake up most people.

My son, who was on sub duty in the Navy, said the arctic ice averaged over 20' thick circa 1960.
The subs can surface through about 12' of ice and used to have to search for places to come up in the Arctic.
Now it averages only about 6', so they don't even bother to check anymore, they just come up wherever they feel like it.

Best regards,

Joe Anderson