Arctic explorer and filmmaker Sebastian Copeland and his partner Keith Heger trekked 400 miles on foot across virtually impossible terrain while dragging a 200-pound sled in temperatures as low as -50 degrees Fahrenheit to reach the North Pole. As sea ice continues to melt, Copeland warns that reaching the North Pole on foot might become impossible.

Copeland and Heger are two of only 150 people who have ever reached the geographic of the North Pole by foot. Copeland details his adventure in a new documentary "Into the Cold" which is timed to the centennial of the first ever successful expedition to the North Pole completed by Robert Peary in April 1909.

Copeland is not only a filmmaker but a world renowned photographer who focuses on Polar Regions. In 2007, he released "Antarctica", a book highlighting his numerous trips to Antarctica. His next adventure will be a 2,500 mile trek across Antarctica to commemorate the centennial of Roald Amundsen's 1911 pioneer expedition.

"There may not be a pole to reach on foot. This is a commemorative, 100th year anniversary and its absolutely true that in a decade, perhaps two decades it will not longer be possible for people to reach the North Pole the way Perry did 100 years ago." Sebastian Copeland

1. What is the Arctic?
2. Name three famous explorers.
3. Who was the first person to successfully expedite to the North Pole?

1. According to the video, the North Pole often shifts. Why do you think this occurs?
2. With the fear of global warming looming, do you think your generation will have the opportunity to visit the North Pole? Why or why not?
3. Sebastian Copeland said he ate between 5,000 and 7,000 calories a day but still lost over 20lbs during his exploration to the North Pole. Why do you think he was able to consume so many calories yet still lost weight?