These ice blocks are the size of skyscrapers. And this is the Beardmore Glacier which Scott and his men somehow traversed on foot. It's over 100 miles long and one of the largest glaciers on earth. But nothing could prepare those earlier explorers for what they are about to encounter.

The Antarctic ice cap, the largest expanse of ice on the planet. It's three miles thick in the places and imprisons 70% of the world's fresh water. From here to the South Pole, 700 miles away, there is nothing but ice.

I'm in the South Pole, at the end of my journey. Although it's mid-summer, the temperature here is bone-- 35 degrees below freeze. It's exactly a hundred year, almost the day that the first human being stood right here. Emerson followed by Scott.In those days, reaching the poles was regarded as the ultimate in human endeavor and endurance and a source of great national pride. Today, the polar region have a rather significant difference. Because now we've come to understand what happens here and in the North affects everyone of us no matter where we live on this planet.

注：听力文本来源于普特