Glaciers have been calving huge icebergs into the sea for as long as glaciers have met ocean. Those icebergs eventually melt and collapse just like this. Risin

Glaciers have been calving huge icebergs into the sea for as long as glaciers have met ocean. Those icebergs eventually melt and collapse just like this. Rising temps contribute to the rate at which icebergs are produced and the speed at which they melt, but there's nothing in this video in particular that wouldn't have happened 200 years ago aside from the motorboat going by at the beginning.