How much of northern Canada is habitable?

none of it.

How did Canada pick its name?

There were two Canadians and an American. They put letters in a hat and drew. They got "C-eh", "N-eh", "D-eh". The American didn't know what was going on, but he relayed the message. I know i need to work on my execution.

How can you tell if you're in Detroit or across the river in Windsor Ontario Canada?

Stand in the middle of the street. If someone yells, "hey, get out of the street" you're in the US. If they yell, "get out of the street, eh" you're in Canada

Northern Canada Jokes More Northern Canada Jokes

How much of northern Canada is livable?

Nunavut*

What did the one explorer say to the other when they arrived in Northern Canada?

Eh, you take this one. I don't want Nunavut. PS: I realize it's a double negative.