USA Today: There will certainly be more negative than positive effects from climate change. But shipping routes across the Arctic Ocean -- which have been ice-covered and impassable since humans invented ships millenniums ago -- could be open for the first time by midcentury because of climate change, a study suggests.
This includes shipping directly across the North Pole and through the famed Northwest Passage, a sea route from Newfoundland toward the Bering Strait, neither of which has ever been done....