At a recent conference in Oslo, Al Gore pounded one of his favorite drums. “We have to act, and we have to act quickly because we don’t want to cross this tipping point,” he warned. This particular tipping point (among the many tipping points in Mr. Gore’s collection) is the proclaimed melting of the world’s polar ice packs and glaciers in the Northern Hemisphere.
Mr. Gore regularly worries about ice melting in the Southern Hemisphere as well. In recent testimony to the House Energy and Commerce Committee, Mr. Gore warned:
“We already know that the Antarctic Peninsula is warming at three to five times the global average rate. That is why the Larsen B ice shelf, which was the size of Rhode Island, already has collapsed. Several other ice shelves have also collapsed in the last 20 years.